diff --git a/src/Network/Network.Test/NrpTeamAlias.cs b/src/Network/Network.Test/NrpTeamAlias.cs
index e01c2d64539a..3cb7c501f650 100644
--- a/src/Network/Network.Test/NrpTeamAlias.cs
+++ b/src/Network/Network.Test/NrpTeamAlias.cs
@@ -64,5 +64,8 @@ class NrpTeamAlias
 
         // Azure Network IPAM dev team
         public const string ipam = "ipamdev";
+
+        // Azure Network Billing and Telemetry team
+        public const string billingandtelemetry = "azurenetworkbilling";
     }
 }
diff --git a/src/Network/Network.Test/ScenarioTests/CustomIpPrefixTests.cs b/src/Network/Network.Test/ScenarioTests/CustomIpPrefixTests.cs
new file mode 100644
index 000000000000..e78ab7c7c2c8
--- /dev/null
+++ b/src/Network/Network.Test/ScenarioTests/CustomIpPrefixTests.cs
@@ -0,0 +1,37 @@
+// ----------------------------------------------------------------------------------
+//
+// Copyright Microsoft Corporation
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://www.apache.org/licenses/LICENSE-2.0
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// ----------------------------------------------------------------------------------
+
+using Microsoft.Azure.Commands.Network.Test.ScenarioTests;
+using Microsoft.WindowsAzure.Commands.ScenarioTest;
+using Xunit;
+
+namespace Commands.Network.Test.ScenarioTests
+{
+
+    public class CustomIpPrefixTests : NetworkTestRunner
+    {
+        public CustomIpPrefixTests(Xunit.Abstractions.ITestOutputHelper output)
+             : base(output)
+        {
+        }
+
+        [Fact(Skip = "Resource currently in private preview, testing requires very specific conditions, will implement these tests in future.")]
+        [Trait(Category.AcceptanceType, Category.CheckIn)]
+        [Trait(Category.Owner, NrpTeamAlias.billingandtelemetry)]
+        public void TestCustomIpPrefixCRUD()
+        {
+            TestRunner.RunTestScript("Test-CustomIpPrefixCRUD");
+        }
+    }
+}
diff --git a/src/Network/Network.Test/ScenarioTests/CustomIpPrefixTests.ps1 b/src/Network/Network.Test/ScenarioTests/CustomIpPrefixTests.ps1
new file mode 100644
index 000000000000..5a6eb17630f5
--- /dev/null
+++ b/src/Network/Network.Test/ScenarioTests/CustomIpPrefixTests.ps1
@@ -0,0 +1,117 @@
+# ----------------------------------------------------------------------------------
+#
+# Copyright Microsoft Corporation
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+# http://www.apache.org/licenses/LICENSE-2.0
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ----------------------------------------------------------------------------------
+
+<#
+.SYNOPSIS
+Tests CRUD operations on a simple customIpPrefix.
+
+NOTE: This feature is currently in private preview, so updated binaries are on test slice in canary only and is currently un-reacheable via the production manifest.
+Testing has been done locally using the brazilus ARM endpoint and a specific subscription that has the necessary flags to run these cmdlets. 
+#>
+function Test-CustomIpPrefixCRUD
+{
+    # Setup
+    $rgname = "powershell-test-rg"
+    $rname = "testCustomIpPrefix"
+    $location = "eastus2euap"
+    $cidr = "40.40.40.0/24"
+
+    try
+    {
+        # Create the resource group
+        $resourceGroup = New-AzResourceGroup -Name $rgname -Location $rglocation
+
+        # Create customIpPrefix
+        $job = New-AzCustomIpPrefix -Name $rname -ResourceGroupName $rgname -location $location -Cidr $cidr -AsJob
+        $job | Wait-Job
+        $job | Receive-Job
+
+        # get by name and resource group
+        $actual = Get-AzCustomIpPrefix -ResourceGroupName $rgname -name $rname
+        Assert-AreEqual $actual.ResourceGroupName $rgname
+        Assert-AreEqual $actual.Name $rname
+        Assert-AreEqual $actual.Location $location
+        Assert-AreEqual $actual.Cidr $cidr
+        Assert-AreEqual $actual.PublicIpPrefixes.Count 0
+        Assert-NotNull  $actual.ResourceGuid
+        Assert-AreEqual $actual.ProvisioningState "Succeeded"
+
+        # get by resource id
+        $actual = Get-AzCustomIpPrefix -ResourceId $actual.Id
+        Assert-AreEqual $actual.ResourceGroupName $rgname
+        Assert-AreEqual $actual.Name $rname
+        Assert-AreEqual $actual.Location $location
+        Assert-AreEqual $actual.Cidr $cidr
+        Assert-AreEqual $actual.PublicIpPrefixes.Count 0
+        Assert-NotNull  $actual.ResourceGuid
+        Assert-AreEqual $actual.ProvisioningState "Succeeded"
+
+        # get by input object
+        $actual = Get-AzCustomIpPrefix -InputObject $actual
+        Assert-AreEqual $actual.ResourceGroupName $rgname
+        Assert-AreEqual $actual.Name $rname
+        Assert-AreEqual $actual.Location $location
+        Assert-AreEqual $actual.Cidr $cidr
+        Assert-AreEqual $actual.PublicIpPrefixes.Count 0
+        Assert-NotNull  $actual.ResourceGuid
+        Assert-AreEqual $actual.ProvisioningState "Succeeded"
+
+        # list
+        $list = Get-AzCustomIpPrefix -ResourceGroupName $rgname
+        Assert-AreEqual 1 @($list).Count
+        Assert-AreEqual $list[0].ResourceGroupName $actual.ResourceGroupName
+        Assert-AreEqual $list[0].Name $actual.Name
+        Assert-AreEqual $list[0].Location $actual.Location
+        Assert-AreEqual $list[0].Cidr $actual.Cidr
+        Assert-AreEqual $list[0].PublicIpPrefixes.Count 0
+        Assert-AreEqual $list[0].ProvisioningState "Succeeded"
+
+        # delete
+        $job = Remove-AzCustomIpPrefix -InputObject $actual -PassThru -Force -AsJob
+        $job | Wait-Job
+        $delete = $job | Receive-Job
+        Assert-AreEqual true $delete
+
+        $list = Get-AzPublicIpPrefix -ResourceGroupName $rgname
+        Assert-AreEqual 0 @($list).Count
+
+        # Try setting unexisting
+        Assert-ThrowsLike { Update-AzPublicIpPrefix -PublicIpPrefix $expected } "*not found*"
+
+        # Create one more time to test deletion with resource id parameter set
+        $job = New-AzCustomIpPrefix -Name $rname -ResourceGroupName $rgname -location $location -Cidr $cidr -AsJob
+        $job | Wait-Job
+        $expected = $job | Receive-Job
+
+        $job = Remove-AzPublicIpPrefix -ResourceId $expected.Id -PassThru -Force -AsJob
+        $job | Wait-Job
+        $delete = $job | Receive-Job
+        Assert-AreEqual true $delete
+
+        # Create one more time to test deletion with resource group and name
+        $job = New-AzCustomIpPrefix -Name $rname -ResourceGroupName $rgname -location $location -Cidr $cidr -AsJob
+        $job | Wait-Job
+        $expected = $job | Receive-Job
+
+        $job = Remove-AzPublicIpPrefix -Name $rname -ResourceGroupName $rgname
+        $job | Wait-Job
+        $delete = $job | Receive-Job
+        Assert-AreEqual true $delete
+    }
+    finally
+    {
+        # Cleanup
+        Clean-ResourceGroup $rgname
+    }
+}
\ No newline at end of file
diff --git a/src/Network/Network/Az.Network.psd1 b/src/Network/Network/Az.Network.psd1
index 1b2519abaf77..fcc1290ff633 100644
--- a/src/Network/Network/Az.Network.psd1
+++ b/src/Network/Network/Az.Network.psd1
@@ -496,7 +496,10 @@ CmdletsToExport = 'Add-AzApplicationGatewayAuthenticationCertificate',
                'New-AzVirtualApplianceSite', 'Remove-AzVirtualApplianceSite', 
                'Update-AzVirtualApplianceSite', 'New-AzOffice365PolicyProperty', 
                'Get-AzNetworkVirtualApplianceSku', 
-               'New-AzVirtualApplianceSkuProperty'
+               'New-AzVirtualApplianceSkuProperty',
+			   'New-AzCustomIpPrefix', 'Update-AzCustomIpPrefix',
+			   'Get-AzCustomIpPrefix', 'Remove-AzCustomIpPrefix'
+
 
 # Variables to export from this module
 # VariablesToExport = @()
diff --git a/src/Network/Network/BYOIP/CustomIpPrefix/CustomIpPrefixBaseCmdlet.cs b/src/Network/Network/BYOIP/CustomIpPrefix/CustomIpPrefixBaseCmdlet.cs
new file mode 100644
index 000000000000..d7566500d63b
--- /dev/null
+++ b/src/Network/Network/BYOIP/CustomIpPrefix/CustomIpPrefixBaseCmdlet.cs
@@ -0,0 +1,52 @@
+// ----------------------------------------------------------------------------------
+//
+// Copyright Microsoft Corporation
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://www.apache.org/licenses/LICENSE-2.0
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// ----------------------------------------------------------------------------------
+
+namespace Microsoft.Azure.Commands.Network
+{
+    using Microsoft.Azure.Commands.Network.Models;
+    using Microsoft.Azure.Commands.ResourceManager.Common.Tags;
+    using Microsoft.Azure.Management.Network;
+    using Microsoft.Azure.Management.Network.Models;
+    using System.Net;
+
+    public abstract class CustomIpPrefixBaseCmdlet : NetworkBaseCmdlet
+    {
+        public ICustomIPPrefixesOperations CustomIpPrefixClient
+        {
+            get
+            {
+                return NetworkClient.NetworkManagementClient.CustomIPPrefixes;
+            }
+        }
+
+        public PSCustomIpPrefix GetCustomIpPrefix(string resourceGroupName, string name, string expandResource = null)
+        {
+            var sdkModel = this.CustomIpPrefixClient.Get(resourceGroupName, name, expandResource);
+
+            var psModel = ToPsCustomIpPrefix(sdkModel);
+            psModel.ResourceGroupName = resourceGroupName;
+
+            return psModel;
+        }
+
+        public PSCustomIpPrefix ToPsCustomIpPrefix(CustomIpPrefix customIpPrefix)
+        {
+            var psModel = NetworkResourceManagerProfile.Mapper.Map<PSCustomIpPrefix>(customIpPrefix);
+
+            psModel.Tag = TagsConversionHelper.CreateTagHashtable(customIpPrefix.Tags);
+
+            return psModel;
+        }
+    }
+}
diff --git a/src/Network/Network/BYOIP/CustomIpPrefix/GetAzureCustomIpPrefixCommand.cs b/src/Network/Network/BYOIP/CustomIpPrefix/GetAzureCustomIpPrefixCommand.cs
new file mode 100644
index 000000000000..9efaa748a400
--- /dev/null
+++ b/src/Network/Network/BYOIP/CustomIpPrefix/GetAzureCustomIpPrefixCommand.cs
@@ -0,0 +1,113 @@
+// ----------------------------------------------------------------------------------
+//
+// Copyright Microsoft Corporation
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://www.apache.org/licenses/LICENSE-2.0
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// ----------------------------------------------------------------------------------
+
+namespace Microsoft.Azure.Commands.Network
+{
+    using Microsoft.Azure.Commands.Network.Models;
+    using Microsoft.Azure.Commands.ResourceManager.Common.Tags;
+    using Microsoft.Azure.Management.Network;
+    using System.Collections.Generic;
+    using System.Management.Automation;
+    using Microsoft.Azure.Management.Network.Models;
+    using Microsoft.Rest.Azure;
+    using Microsoft.Azure.Commands.ResourceManager.Common.ArgumentCompleters;
+    using Microsoft.WindowsAzure.Commands.Utilities.Common;
+    using Microsoft.Azure.Management.Internal.Resources.Utilities.Models;
+
+    [Cmdlet(VerbsCommon.Get, ResourceManager.Common.AzureRMConstants.AzureRMPrefix + "CustomIpPrefix", DefaultParameterSetName = GetByNameParameterSet), OutputType(typeof(PSCustomIpPrefix))]
+    public class GetAzureCustomIpPrefixCommand : CustomIpPrefixBaseCmdlet
+    {
+        private const string GetByNameParameterSet = "GetByNameParameterSet";
+        private const string GetByResourceIdParameterSet = "GetByResourceIdParameterSet";
+
+        [Alias("ResourceName")]
+        [Parameter(
+            Mandatory = false,
+            ValueFromPipelineByPropertyName = true,
+            HelpMessage = "The resource name.",
+            ParameterSetName = GetByNameParameterSet)]
+        [ResourceNameCompleter("Microsoft.Network/customIpPrefix", "ResourceGroupName")]
+        [ValidateNotNullOrEmpty]
+        [SupportsWildcards]
+        public virtual string Name { get; set; }
+
+        [Parameter(
+            Mandatory = false,
+            ValueFromPipelineByPropertyName = true,
+            HelpMessage = "The resource group name.",
+            ParameterSetName = GetByNameParameterSet)]
+        [ResourceGroupCompleter]
+        [ValidateNotNullOrEmpty]
+        [SupportsWildcards]
+        public virtual string ResourceGroupName { get; set; }
+
+        [Parameter(
+            Mandatory = true, 
+            ValueFromPipelineByPropertyName = true,
+            HelpMessage = "The resource id.",
+            ParameterSetName = GetByResourceIdParameterSet)]
+        [ValidateNotNullOrEmpty]
+        public virtual string ResourceId { get; set; }
+
+        public override void Execute()
+        {
+            base.Execute();
+
+            if (this.IsParameterBound(c => c.ResourceId))
+            {
+                var resourceIdentifier = new ResourceIdentifier(this.ResourceId);
+                this.ResourceGroupName = resourceIdentifier.ResourceGroupName;
+                this.Name = resourceIdentifier.ResourceName;
+            }
+
+            if (ShouldGetByName(this.ResourceGroupName, this.Name))
+            {
+                PSCustomIpPrefix psModel;
+
+                psModel = this.GetCustomIpPrefix(this.ResourceGroupName, this.Name);
+
+                WriteObject(psModel);
+            }
+            else
+            {
+                IPage<CustomIpPrefix> page;
+                if (ShouldListByResourceGroup(this.ResourceGroupName, this.Name))
+                {
+                    page = this.CustomIpPrefixClient.List(this.ResourceGroupName);
+                }
+                else
+                {
+                    page = this.CustomIpPrefixClient.ListAll();
+                }
+
+                // Get all resources by polling on next page link
+                List<CustomIpPrefix> sdkModelList;
+
+                sdkModelList = ListNextLink<CustomIpPrefix>.GetAllResourcesByPollingNextLink(page, this.CustomIpPrefixClient.ListNext);
+
+                var psModelList = new List<PSCustomIpPrefix>();
+
+                // populate the publicIpPrefixes with the ResourceGroupName
+                foreach (var sdkModel in sdkModelList)
+                {
+                    var psModel = this.ToPsCustomIpPrefix(sdkModel);
+                    psModel.ResourceGroupName = NetworkBaseCmdlet.GetResourceGroup(psModel.Id);
+                    psModelList.Add(psModel);
+                }
+
+                WriteObject(TopLevelWildcardFilter(this.ResourceGroupName, this.Name, psModelList), true);
+            }
+        }
+    }
+}
diff --git a/src/Network/Network/BYOIP/CustomIpPrefix/NewAzureCustomIpPrefixCommand.cs b/src/Network/Network/BYOIP/CustomIpPrefix/NewAzureCustomIpPrefixCommand.cs
new file mode 100644
index 000000000000..63afddc7253a
--- /dev/null
+++ b/src/Network/Network/BYOIP/CustomIpPrefix/NewAzureCustomIpPrefixCommand.cs
@@ -0,0 +1,119 @@
+// ----------------------------------------------------------------------------------
+//
+// Copyright Microsoft Corporation
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://www.apache.org/licenses/LICENSE-2.0
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// ----------------------------------------------------------------------------------
+
+namespace Microsoft.Azure.Commands.Network
+{
+    using Microsoft.Azure.Commands.Network.Models;
+    using Microsoft.Azure.Commands.ResourceManager.Common.ArgumentCompleters;
+    using Microsoft.Azure.Commands.ResourceManager.Common.Tags;
+    using Microsoft.Azure.Management.Network;
+    using System.Collections;
+    using System.Linq;
+    using System.Management.Automation;
+    using MNM = Microsoft.Azure.Management.Network.Models;
+
+    [Cmdlet(VerbsCommon.New, ResourceManager.Common.AzureRMConstants.AzureRMPrefix + "CustomIpPrefix", SupportsShouldProcess = true), OutputType(typeof(PSCustomIpPrefix))]
+    public class NewAzureCustomIpPrefixCommand : CustomIpPrefixBaseCmdlet
+    {
+        [Alias("ResourceName")]
+        [Parameter(
+            Mandatory = true,
+            ValueFromPipelineByPropertyName = true,
+            HelpMessage = "The resource name.")]
+        [ValidateNotNullOrEmpty]
+        public virtual string Name { get; set; }
+
+        [Parameter(
+            Mandatory = true,
+            ValueFromPipelineByPropertyName = true,
+            HelpMessage = "The resource group name.")]
+        [ResourceGroupCompleter]
+        [ValidateNotNullOrEmpty]
+        public virtual string ResourceGroupName { get; set; }
+
+        [Parameter(
+            Mandatory = true,
+            ValueFromPipelineByPropertyName = true,
+            HelpMessage = "The customIpPrefix location.")]
+        [LocationCompleter("Microsoft.Network/customIpPrefix")]
+        [ValidateNotNullOrEmpty]
+        public string Location { get; set; }
+
+        [Parameter(
+            Mandatory = true,
+            ValueFromPipelineByPropertyName = true,
+            HelpMessage = "The customIpPrefix CIDR.")]
+        [ValidateNotNullOrEmpty]
+        public string Cidr { get; set; }
+
+        [Parameter(
+            Mandatory = false,
+            HelpMessage = "A list of availability zones denoting the IP allocated for the resource needs to come from.",
+            ValueFromPipelineByPropertyName = true)]
+        public string[] Zone { get; set; }
+
+        [Parameter(
+            Mandatory = false,
+            ValueFromPipelineByPropertyName = true,
+            HelpMessage = "A hashtable which represents resource tags.")]
+        public Hashtable Tag { get; set; }
+
+        [Parameter(Mandatory = false, HelpMessage = "Run cmdlet in the background")]
+        public SwitchParameter AsJob { get; set; }
+
+        public override void Execute()
+        {
+            base.Execute();
+            var resourceExists = IsResourcePresent(() => GetCustomIpPrefix(this.ResourceGroupName, this.Name));
+
+            if (resourceExists)
+            {
+                throw new System.Exception(string.Format("A CustomIpPrefix with name '{0}' in resource group '{1}' already exists. Please use Set-AzCustomIpPrefix to update an existing CustomIpPrefix.", this.Name, this.ResourceGroupName));
+            }
+
+            var psModel = CreateCustomIpPrefix();
+            if (psModel != null)
+            {
+                WriteObject(psModel);
+            }
+        }
+
+        private PSCustomIpPrefix CreateCustomIpPrefix()
+        {
+            var psModel = new PSCustomIpPrefix()
+            {
+                Name = this.Name,
+                ResourceGroupName = this.ResourceGroupName,
+                Location = this.Location,
+                Cidr = this.Cidr,
+                Zones = this.Zone?.ToList()
+            };
+            
+            var sdkModel = NetworkResourceManagerProfile.Mapper.Map<MNM.CustomIpPrefix>(psModel);
+
+            sdkModel.Tags = TagsConversionHelper.CreateTagDictionary(this.Tag, validate: true);
+
+            if (this.ShouldProcess($"Name: {this.Name} ResourceGroup: {this.ResourceGroupName}", "Create new MasterCustomIpPrefix"))
+            {
+                this.CustomIpPrefixClient.CreateOrUpdate(this.ResourceGroupName, this.Name, sdkModel);
+
+                var customIpPrefix = this.GetCustomIpPrefix(this.ResourceGroupName, this.Name);
+
+                return customIpPrefix;
+            }
+
+            return null;
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/Network/Network/BYOIP/CustomIpPrefix/RemoveAzureCustomIpPrefixCommand.cs b/src/Network/Network/BYOIP/CustomIpPrefix/RemoveAzureCustomIpPrefixCommand.cs
new file mode 100644
index 000000000000..e2d522db9b9f
--- /dev/null
+++ b/src/Network/Network/BYOIP/CustomIpPrefix/RemoveAzureCustomIpPrefixCommand.cs
@@ -0,0 +1,112 @@
+// ----------------------------------------------------------------------------------
+//
+// Copyright Microsoft Corporation
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://www.apache.org/licenses/LICENSE-2.0
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// ----------------------------------------------------------------------------------
+
+namespace Microsoft.Azure.Commands.Network
+{
+    using Microsoft.Azure.Commands.Network.Models;
+    using Microsoft.Azure.Commands.ResourceManager.Common.ArgumentCompleters;
+    using Microsoft.Azure.Management.Internal.Resources.Utilities.Models;
+    using Microsoft.Azure.Management.Network;
+    using Microsoft.WindowsAzure.Commands.Utilities.Common;
+    using System.Management.Automation;
+
+    [Cmdlet(VerbsCommon.Remove, ResourceManager.Common.AzureRMConstants.AzureRMPrefix + "CustomIpPrefix", SupportsShouldProcess = true, DefaultParameterSetName = DeleteByNameParameterSet), OutputType(typeof(bool))]
+    public class RemoveAzureCustomIpPrefixCommand : CustomIpPrefixBaseCmdlet
+    {
+        private const string DeleteByNameParameterSet = "DeleteByNameParameterSet";
+        private const string DeleteByInputObjectParameterSet = "DeleteByInputObjectParameterSet";
+        private const string DeleteByResourceIdParameterSet = "DeleteByResourceIdParameterSet";
+
+        [Alias("ResourceName")]
+        [Parameter(
+            Mandatory = true,
+            ValueFromPipelineByPropertyName = true,
+            HelpMessage = "The resource name.",
+            ParameterSetName = DeleteByNameParameterSet)]
+        [ResourceNameCompleter("Microsoft.Network/customIpPrefix", "ResourceGroupName")]
+        [ValidateNotNullOrEmpty]
+        public virtual string Name { get; set; }
+
+        [Parameter(
+            Mandatory = true,
+            ValueFromPipelineByPropertyName = true,
+            HelpMessage = "The resource group name.",
+            ParameterSetName = DeleteByNameParameterSet)]
+        [ResourceGroupCompleter]
+        [ValidateNotNullOrEmpty]
+        public virtual string ResourceGroupName { get; set; }
+
+        [Parameter(
+            Mandatory = true, 
+            ValueFromPipelineByPropertyName = true,
+            HelpMessage = "The resource id.",
+            ParameterSetName = DeleteByResourceIdParameterSet)]
+        [ValidateNotNullOrEmpty]
+        public virtual string ResourceId { get; set; }
+
+        [Parameter(
+            Mandatory = true, 
+            ValueFromPipeline = true,
+            HelpMessage = "A customIpPrefix object.",
+            ParameterSetName = DeleteByInputObjectParameterSet)]
+        [ValidateNotNull]
+        public PSCustomIpPrefix InputObject { get; set; }
+
+        [Parameter(
+            Mandatory = false,
+            HelpMessage = "Do not ask for confirmation.")]
+        public SwitchParameter Force { get; set; }
+
+        [Parameter(Mandatory = false)]
+        public SwitchParameter PassThru { get; set; }
+
+        [Parameter(Mandatory = false, HelpMessage = "Run cmdlet in the background")]
+        public SwitchParameter AsJob { get; set; }
+
+        public override void Execute()
+        {
+            base.Execute();
+
+            if (this.IsParameterBound(c => c.InputObject))
+            {
+                this.ResourceGroupName = this.InputObject.ResourceGroupName;
+                this.Name = this.InputObject.Name;
+            }
+
+            if (this.IsParameterBound(c => c.ResourceId))
+            {
+                var resourceIdentifier = new ResourceIdentifier(this.ResourceId);
+                this.ResourceGroupName = resourceIdentifier.ResourceGroupName;
+                this.Name = resourceIdentifier.ResourceName;
+            }
+
+            ConfirmAction(
+                Force.IsPresent,
+                string.Format(Microsoft.Azure.Commands.Network.Properties.Resources.RemovingResource, Name),
+                Microsoft.Azure.Commands.Network.Properties.Resources.RemoveResourceMessage,
+                Name,
+                () =>
+                {
+                    if (this.ShouldProcess(this.Name, $"Deleting CustomIpPrefix: {this.Name} in ResourceGroup: {this.ResourceGroupName}"))
+                    {
+                        this.CustomIpPrefixClient.Delete(this.ResourceGroupName, this.Name);
+                        if (PassThru)
+                        {
+                            WriteObject(true);
+                        }
+                    }
+                });
+        }
+    }
+}
diff --git a/src/Network/Network/BYOIP/CustomIpPrefix/UpdateAzureCustomIpPrefixCommand.cs b/src/Network/Network/BYOIP/CustomIpPrefix/UpdateAzureCustomIpPrefixCommand.cs
new file mode 100644
index 000000000000..a69b15d86a84
--- /dev/null
+++ b/src/Network/Network/BYOIP/CustomIpPrefix/UpdateAzureCustomIpPrefixCommand.cs
@@ -0,0 +1,145 @@
+// ----------------------------------------------------------------------------------
+//
+// Copyright Microsoft Corporation
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://www.apache.org/licenses/LICENSE-2.0
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// ----------------------------------------------------------------------------------
+
+namespace Microsoft.Azure.Commands.Network
+{
+    using Microsoft.Azure.Commands.Network.Models;
+    using Microsoft.Azure.Commands.ResourceManager.Common.ArgumentCompleters;
+    using Microsoft.Azure.Commands.ResourceManager.Common.Tags;
+    using Microsoft.Azure.Management.Internal.Resources.Utilities.Models;
+    using Microsoft.Azure.Management.Network;
+    using Microsoft.WindowsAzure.Commands.Utilities.Common;
+    using System;
+    using System.Collections;
+    using System.Management.Automation;
+    using MNM = Microsoft.Azure.Management.Network.Models;
+
+    [Cmdlet(VerbsData.Update, ResourceManager.Common.AzureRMConstants.AzureRMPrefix + "CustomIpPrefix", SupportsShouldProcess = true, DefaultParameterSetName = UpdateByNameParameterSet), OutputType(typeof(PSCustomIpPrefix))]
+    public class UpdateAzureCustomIpPrefixCommand : CustomIpPrefixBaseCmdlet
+    {
+        private const string UpdateByNameParameterSet = "UpdateByNameParameterSet";
+        private const string UpdateByInputObjectParameterSet = "UpdateByInputObjectParameterSet";
+        private const string UpdateByResourceIdParameterSet = "UpdateByResourceIdParameterSet";
+
+        [Parameter(
+           Mandatory = true,
+           ValueFromPipelineByPropertyName = true,
+           HelpMessage = "The resource name.", ParameterSetName = UpdateByNameParameterSet)]
+        [ResourceNameCompleter("Microsoft.Network/customIpPrefix", "ResourceGroupName")]
+        [ValidateNotNullOrEmpty]
+        [SupportsWildcards]
+        public virtual string Name { get; set; }
+
+        [Parameter(
+            Mandatory = true,
+            ValueFromPipelineByPropertyName = true,
+            HelpMessage = "The resource group name.", ParameterSetName = UpdateByNameParameterSet)]
+        [ValidateNotNullOrEmpty]
+        [SupportsWildcards]
+        public virtual string ResourceGroupName { get; set; }
+
+        [Parameter(
+            Mandatory = true,
+            ValueFromPipeline = true,
+            HelpMessage = "The CustomIpPrefix to set.", ParameterSetName = UpdateByInputObjectParameterSet)]
+        public PSCustomIpPrefix InputObject { get; set; }
+
+        [Parameter(
+                    Mandatory = true,
+                    ValueFromPipelineByPropertyName = true,
+                    HelpMessage = "The resource Id.", ParameterSetName = UpdateByResourceIdParameterSet)]
+        [ValidateNotNullOrEmpty]
+        [SupportsWildcards]
+        public virtual string ResourceId { get; set; }
+
+        [Parameter(Mandatory = false, HelpMessage = "Run cmdlet in the background")]
+        public SwitchParameter Commission { get; set; }
+
+        [Parameter(Mandatory = false, HelpMessage = "Run cmdlet in the background")]
+        public SwitchParameter Decomission { get; set; }
+
+        [Parameter(
+            Mandatory = false,
+            ValueFromPipelineByPropertyName = true,
+            HelpMessage = "A hashtable which represents resource tags.",
+            ParameterSetName = UpdateByNameParameterSet)]
+        [Parameter(Mandatory = false, ParameterSetName = UpdateByResourceIdParameterSet)]
+        [Parameter(Mandatory = false, ParameterSetName = UpdateByInputObjectParameterSet)]
+        public Hashtable Tag { get; set; }
+
+        [Parameter(Mandatory = false, HelpMessage = "Run cmdlet in the background")]
+        public SwitchParameter AsJob { get; set; }
+
+        public override void Execute()
+        {
+            base.Execute();
+
+            if (this.IsParameterBound(c => c.ResourceId))
+            {
+                var resourceInfo = new ResourceIdentifier(ResourceId);
+                this.ResourceGroupName = resourceInfo.ResourceGroupName;
+                this.Name = resourceInfo.ResourceName;
+            }
+            else if (this.IsParameterBound(c => c.InputObject))
+            {
+                this.ResourceGroupName = InputObject.ResourceGroupName;
+                this.Name = InputObject.Name;
+            }
+
+            var existingResourcePsModel = GetCustomIpPrefix(this.ResourceGroupName, this.Name);
+            if (existingResourcePsModel == null)
+            {
+                throw new ArgumentException(Microsoft.Azure.Commands.Network.Properties.Resources.ResourceNotFound);
+            }
+
+            if (Commission && Decomission)
+            {
+                throw new ArgumentException(Microsoft.Azure.Commands.Network.Properties.Resources.CommissioningStateConflict);
+            }
+
+            PSCustomIpPrefix customIpPrefixToUpdate = this.GetCustomIpPrefix(this.ResourceGroupName, this.Name);
+
+            if (customIpPrefixToUpdate == null)
+            {
+                throw new PSArgumentException(Properties.Resources.ResourceNotFound, this.Name);
+            }
+
+            if (Commission || Decomission)
+            {
+                customIpPrefixToUpdate.CommissionedState = Commission ? "Commissioning" : "Decomissioning";
+            }
+
+            var sdkModel = NetworkResourceManagerProfile.Mapper.Map<MNM.CustomIpPrefix>(customIpPrefixToUpdate);
+
+            if (this.IsParameterBound(c => c.InputObject))
+            {
+                sdkModel.Tags = TagsConversionHelper.CreateTagDictionary(this.IsParameterBound(c => c.Tag) ? this.Tag : InputObject.Tag, validate: true);
+            }
+            else
+            {
+                sdkModel.Tags = TagsConversionHelper.CreateTagDictionary(this.Tag, validate: true);
+            }
+
+            if (this.ShouldProcess($"Name: {this.Name} ResourceGroup: {this.ResourceGroupName}", "Update existing CustomIpPrefix"))
+            {
+                // Execute the PUT MasterCustomIpPrefix Policy call
+                this.CustomIpPrefixClient.CreateOrUpdate(this.ResourceGroupName, this.Name, sdkModel);
+
+                var customIpPrefix = this.GetCustomIpPrefix(this.ResourceGroupName, this.Name);
+
+                WriteObject(customIpPrefix);
+            }
+        }
+    }
+}
diff --git a/src/Network/Network/Common/NetworkResourceManagerProfile.cs b/src/Network/Network/Common/NetworkResourceManagerProfile.cs
index 8b3db64da9a2..937f397acf37 100644
--- a/src/Network/Network/Common/NetworkResourceManagerProfile.cs
+++ b/src/Network/Network/Common/NetworkResourceManagerProfile.cs
@@ -394,6 +394,13 @@ private static void Initialize()
                 cfg.CreateMap<MNM.IpTag, CNM.PSPublicIpPrefixTag>();
                 cfg.CreateMap<MNM.ReferencedPublicIpAddress, CNM.PSPublicIpAddress>();
 
+                // CustomIpPrefix
+                // CNM to MNM
+                cfg.CreateMap<CNM.PSCustomIpPrefix, MNM.CustomIpPrefix>();
+
+                // MNM to CNM
+                cfg.CreateMap<MNM.CustomIpPrefix, CNM.PSCustomIpPrefix>();
+
                 // NetworkInterface
                 // CNM to MNM
                 cfg.CreateMap<CNM.PSNetworkInterface, MNM.NetworkInterface>();
diff --git a/src/Network/Network/Models/BYOIP/PSCustomIpPrefix.cs b/src/Network/Network/Models/BYOIP/PSCustomIpPrefix.cs
new file mode 100644
index 000000000000..2a21f05cc322
--- /dev/null
+++ b/src/Network/Network/Models/BYOIP/PSCustomIpPrefix.cs
@@ -0,0 +1,38 @@
+// ----------------------------------------------------------------------------------
+//
+// Copyright Microsoft Corporation
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://www.apache.org/licenses/LICENSE-2.0
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// ----------------------------------------------------------------------------------
+
+namespace Microsoft.Azure.Commands.Network.Models
+{
+    using Newtonsoft.Json;
+    using System.Collections.Generic;
+
+    public class PSCustomIpPrefix : PSTopLevelResource
+    {
+        public string Cidr { get; set; }
+
+        public string CommissionedState { get; set; }
+
+        public List<PSResourceId> PublicIpPrefixes { get; set; }
+
+        public List<string> Zones { get; set; }
+
+        public string ProvisioningState { get; set; }
+
+        [JsonIgnore]
+        public string PublicIpPrefixesText
+        {
+            get { return JsonConvert.SerializeObject(PublicIpPrefixes, Formatting.Indented, new JsonSerializerSettings() { NullValueHandling = NullValueHandling.Ignore }); }
+        }
+    }
+}
diff --git a/src/Network/Network/Models/PSPublicIpPrefix.cs b/src/Network/Network/Models/PSPublicIpPrefix.cs
index 03d6e14fffa7..d85c109fb5b4 100644
--- a/src/Network/Network/Models/PSPublicIpPrefix.cs
+++ b/src/Network/Network/Models/PSPublicIpPrefix.cs
@@ -35,6 +35,8 @@ public class PSPublicIpPrefix : PSTopLevelResource
 
         public List<PSPublicIpAddress> PublicIpAddresses { get; set; }
 
+        public PSResourceId CustomIpPrefix { get; set; }
+
         [JsonIgnore]
         public string PublicIpAddressesText
         {
diff --git a/src/Network/Network/Network.csproj b/src/Network/Network/Network.csproj
index c4bf14045c75..6be8b37c7aff 100644
--- a/src/Network/Network/Network.csproj
+++ b/src/Network/Network/Network.csproj
@@ -40,4 +40,4 @@
     <Folder Include="Bastion\" />
   </ItemGroup>
 
-</Project>
+</Project>
\ No newline at end of file
diff --git a/src/Network/Network/Network.format.ps1xml b/src/Network/Network/Network.format.ps1xml
index 1b4e14954873..7b7d01d8bc8c 100644
--- a/src/Network/Network/Network.format.ps1xml
+++ b/src/Network/Network/Network.format.ps1xml
@@ -1492,6 +1492,68 @@
           </ListEntry>
         </ListEntries>
       </ListControl>
+    </View>
+	  <View>
+      <Name>Microsoft.Azure.Commands.Network.Models.PSCustomIpPrefix</Name>
+      <ViewSelectedBy>
+        <TypeName>Microsoft.Azure.Commands.Network.Models.PSCustomIpPrefix</TypeName>
+      </ViewSelectedBy>
+      <ListControl>
+        <ListEntries>
+          <ListEntry>
+            <ListItems>
+              <ListItem>
+                <Label>Name</Label>
+                <PropertyName>Name</PropertyName>
+              </ListItem>
+              <ListItem>
+                <Label>ResourceGroupName</Label>
+                <PropertyName>ResourceGroupName</PropertyName>
+              </ListItem>
+              <ListItem>
+                <Label>Location</Label>
+                <PropertyName>Location</PropertyName>
+              </ListItem>
+              <ListItem>
+                <Label>Id</Label>
+                <PropertyName>Id</PropertyName>
+              </ListItem>
+              <ListItem>
+                <Label>Etag</Label>
+                <PropertyName>Etag</PropertyName>
+              </ListItem>
+              <ListItem>
+                <Label>ResourceGuid</Label>
+                <PropertyName>ResourceGuid</PropertyName>
+              </ListItem>
+              <ListItem>
+                <Label>ProvisioningState</Label>
+                <PropertyName>ProvisioningState</PropertyName>
+              </ListItem>
+              <ListItem>
+                <Label>Tags</Label>
+                <PropertyName>TagsTable</PropertyName>
+              </ListItem>
+              <ListItem>
+                <Label>Cidr</Label>
+                <PropertyName>Cidr</PropertyName>
+              </ListItem>
+              <ListItem>
+                <Label>CommissionedState</Label>
+                <PropertyName>CommissionedState</PropertyName>
+              </ListItem>
+			        <ListItem>
+                <Label>PublicIpPrefixes</Label>
+                <PropertyName>PublicIpPrefixesText</PropertyName>
+              </ListItem>
+              <ListItem>
+                <Label>Zones</Label>
+                <PropertyName>Zones</PropertyName>
+              </ListItem>
+            </ListItems>
+          </ListEntry>
+        </ListEntries>
+      </ListControl>
     </View>
     <View>
       <Name>Microsoft.Azure.Commands.Network.Models.PSPublicIpPrefix</Name>
diff --git a/src/Network/Network/Properties/Resources.Designer.cs b/src/Network/Network/Properties/Resources.Designer.cs
index 80d069c1b285..b68f61a384c4 100644
--- a/src/Network/Network/Properties/Resources.Designer.cs
+++ b/src/Network/Network/Properties/Resources.Designer.cs
@@ -267,6 +267,15 @@ internal static string ChildResourceAlreadyPresentInResourceGroup {
             }
         }
         
+        /// <summary>
+        ///   Looks up a localized string similar to Cannot have both &apos;Commission&apos; and &apos;Decomission&apos; flags set.
+        /// </summary>
+        internal static string CommissioningStateConflict {
+            get {
+                return ResourceManager.GetString("CommissioningStateConflict", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   Looks up a localized string similar to Connection monitor test group contains duplicates in destination endpoint names. Destination endpoint names in testGroup must be unique..
         /// </summary>
diff --git a/src/Network/Network/Properties/Resources.resx b/src/Network/Network/Properties/Resources.resx
index 36e06c980d34..bd9e39a440a1 100644
--- a/src/Network/Network/Properties/Resources.resx
+++ b/src/Network/Network/Properties/Resources.resx
@@ -692,4 +692,8 @@
   <data name="VHubRouteTableReferenceNotFound" xml:space="preserve">
     <value>A valid HubRouteTable reference is required.</value>
   </data>
+  <data name="CommissioningStateConflict" xml:space="preserve">
+    <value>Cannot have both 'Commission' and 'Decomission' flags set</value>
+    <comment>Error message for setting the customIpPrefix</comment>
+  </data>
 </root>
\ No newline at end of file
diff --git a/src/Network/Network/PublicIpPrefix/NewAzurePublicIpPrefixCommand.cs b/src/Network/Network/PublicIpPrefix/NewAzurePublicIpPrefixCommand.cs
index bc83345ef07f..5f73b783961d 100644
--- a/src/Network/Network/PublicIpPrefix/NewAzurePublicIpPrefixCommand.cs
+++ b/src/Network/Network/PublicIpPrefix/NewAzurePublicIpPrefixCommand.cs
@@ -96,6 +96,12 @@ public class NewAzurePublicIpPrefixCommand : PublicIpPrefixBaseCmdlet
             ValueFromPipelineByPropertyName = true)]
         public string[] Zone { get; set; }
 
+        [Parameter(
+            Mandatory = false,
+            ValueFromPipelineByPropertyName = true,
+            HelpMessage = "The CustomIpPrefix that this PublicIpPrefix will be associated with")]
+        public PSCustomIpPrefix CustomIpPrefix { get; set; }
+
         [Parameter(
             Mandatory = false,
             ValueFromPipelineByPropertyName = true,
@@ -165,6 +171,8 @@ private PSPublicIpPrefix CreatePublicIpPrefix()
                 publicIpPrefix.IpTags = this.IpTag?.ToList();
             }
 
+            publicIpPrefix.CustomIpPrefix = this.CustomIpPrefix;
+
             var theModel = NetworkResourceManagerProfile.Mapper.Map<MNM.PublicIPPrefix>(publicIpPrefix);
 
             theModel.Tags = TagsConversionHelper.CreateTagDictionary(this.Tag, validate: true);
diff --git a/src/Network/Network/help/Get-AzCustomIpPrefix.md b/src/Network/Network/help/Get-AzCustomIpPrefix.md
new file mode 100644
index 000000000000..eeddad27a690
--- /dev/null
+++ b/src/Network/Network/help/Get-AzCustomIpPrefix.md
@@ -0,0 +1,133 @@
+---
+external help file: Microsoft.Azure.PowerShell.Cmdlets.Network.dll-Help.xml
+Module Name: Az.Network
+online version: https://docs.microsoft.com/en-us/powershell/module/az.network/get-azcustomipprefix
+schema: 2.0.0
+---
+
+# Get-AzCustomIpPrefix
+
+## SYNOPSIS
+Gets a CustomIpPrefix resource
+
+## SYNTAX
+
+### GetByNameParameterSet (Default)
+```
+Get-AzCustomIpPrefix [-Name <String>] [-ResourceGroupName <String>] [-DefaultProfile <IAzureContextContainer>]
+ [<CommonParameters>]
+```
+
+### GetByResourceIdParameterSet
+```
+Get-AzCustomIpPrefix -ResourceId <String> [-DefaultProfile <IAzureContextContainer>] [<CommonParameters>]
+```
+
+## DESCRIPTION
+The **Get-AzCustomIpPrefix** cmdlet gets one or more CustomIpPrefixes given the set of input parameters
+
+## EXAMPLES
+
+### Example 1
+```powershell
+PS C:\> Get-AzPublicIpPrefix -ResourceGroupName myRg -Name myCustomIpPrefix
+
+Name                 : myCustomIpPrefix
+ResourceGroupName    : myRg
+Location             : westus
+Id                   : /subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/byoip-test-rg/providers/Micro
+                       soft.Network/customIPPrefixes/testCustomIpPrefix
+Etag                 : W/"00000000-0000-0000-0000-000000000000"
+ResourceGuid         : 00000000-0000-0000-0000-000000000000
+ProvisioningState    : Succeeded
+Tags                 :
+Cidr                 : 111.111.111.111/24
+CommissionedState    : Provisioning
+PublicIpPrefixes     : []
+Zones                : {}
+```
+
+This command gets a CustomIpPrefix resource named myCustomIpPrefix in resource group myRg
+
+## PARAMETERS
+
+### -DefaultProfile
+The credentials, account, tenant, and subscription used for communication with Azure.
+
+```yaml
+Type: IAzureContextContainer
+Parameter Sets: (All)
+Aliases: AzContext, AzureRmContext, AzureCredential
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
+### -Name
+The resource name.
+
+```yaml
+Type: String
+Parameter Sets: GetByNameParameterSet
+Aliases: ResourceName
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: True (ByPropertyName)
+Accept wildcard characters: False
+```
+
+### -ResourceGroupName
+The resource group name.
+
+```yaml
+Type: String
+Parameter Sets: GetByNameParameterSet
+Aliases:
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: True (ByPropertyName)
+Accept wildcard characters: False
+```
+
+### -ResourceId
+The resource id.
+
+```yaml
+Type: String
+Parameter Sets: GetByResourceIdParameterSet
+Aliases:
+
+Required: True
+Position: Named
+Default value: None
+Accept pipeline input: True (ByPropertyName)
+Accept wildcard characters: False
+```
+
+### CommonParameters
+This cmdlet supports the common parameters: -Debug, -ErrorAction, -ErrorVariable, -InformationAction, -InformationVariable, -OutVariable, -OutBuffer, -PipelineVariable, -Verbose, -WarningAction, and -WarningVariable. For more information, see [about_CommonParameters](http://go.microsoft.com/fwlink/?LinkID=113216).
+
+## INPUTS
+
+### System.String
+
+## OUTPUTS
+
+### Microsoft.Azure.Commands.Network.Models.PSCustomIpPrefix
+
+## NOTES
+
+## RELATED LINKS
+
+[New-AzCustomIpPrefix](./New-AzCustomIpPrefix.md)
+
+[Remove-AzCustomIpPrefix](./Remove-AzCustomIpPrefix.md)
+
+[Update-AzCustomIpPrefix](./Update-AzCustomIpPrefix.md)
\ No newline at end of file
diff --git a/src/Network/Network/help/New-AzCustomIpPrefix.md b/src/Network/Network/help/New-AzCustomIpPrefix.md
new file mode 100644
index 000000000000..66bb3d91032c
--- /dev/null
+++ b/src/Network/Network/help/New-AzCustomIpPrefix.md
@@ -0,0 +1,209 @@
+---
+external help file: Microsoft.Azure.PowerShell.Cmdlets.Network.dll-Help.xml
+Module Name: Az.Network
+online version: https://docs.microsoft.com/en-us/powershell/module/az.network/new-azcustomipprefix
+schema: 2.0.0
+---
+
+# New-AzCustomIpPrefix
+
+## SYNOPSIS
+Creates a CustomIpPrefix resource
+
+## SYNTAX
+
+```
+New-AzCustomIpPrefix -Name <String> -ResourceGroupName <String> -Location <String> -Cidr <String>
+ [-Zone <String[]>] [-Tag <Hashtable>] [-AsJob] [-DefaultProfile <IAzureContextContainer>] [-WhatIf] [-Confirm]
+ [<CommonParameters>]
+```
+
+## DESCRIPTION
+The **New-AzCustomIpPrefix** cmdlet creates a CustomIpPrefix resource.
+
+## EXAMPLES
+
+### Example 1
+```powershell
+PS C:\> $myCustomIpPrefix = New-AzCustomIpPrefix -Name $prefixName -ResourceGroupName $rgName -Cidr 40.40.40.0/24 -Location westus
+```
+
+This command creates a new CustomIpPrefix resource with name $prefixName in resource group $rgName with a cidr of 40.40.40.0/24 in westus
+
+## PARAMETERS
+
+### -AsJob
+Run cmdlet in the background
+
+```yaml
+Type: SwitchParameter
+Parameter Sets: (All)
+Aliases:
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
+### -Cidr
+The CustomIpPrefix CIDR.
+
+```yaml
+Type: String
+Parameter Sets: (All)
+Aliases:
+
+Required: True
+Position: Named
+Default value: None
+Accept pipeline input: True (ByPropertyName)
+Accept wildcard characters: False
+```
+
+### -DefaultProfile
+The credentials, account, tenant, and subscription used for communication with Azure.
+
+```yaml
+Type: IAzureContextContainer
+Parameter Sets: (All)
+Aliases: AzContext, AzureRmContext, AzureCredential
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
+### -Location
+The CustomIpPrefix location.
+
+```yaml
+Type: String
+Parameter Sets: (All)
+Aliases:
+
+Required: True
+Position: Named
+Default value: None
+Accept pipeline input: True (ByPropertyName)
+Accept wildcard characters: False
+```
+
+### -Name
+The resource name.
+
+```yaml
+Type: String
+Parameter Sets: (All)
+Aliases: ResourceName
+
+Required: True
+Position: Named
+Default value: None
+Accept pipeline input: True (ByPropertyName)
+Accept wildcard characters: False
+```
+
+### -ResourceGroupName
+The resource group name.
+
+```yaml
+Type: String
+Parameter Sets: (All)
+Aliases:
+
+Required: True
+Position: Named
+Default value: None
+Accept pipeline input: True (ByPropertyName)
+Accept wildcard characters: False
+```
+
+### -Tag
+A hashtable which represents resource tags.
+
+```yaml
+Type: Hashtable
+Parameter Sets: (All)
+Aliases:
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: True (ByPropertyName)
+Accept wildcard characters: False
+```
+
+### -Zone
+A list of availability zones denoting the IP allocated for the resource needs to come from.
+
+```yaml
+Type: String[]
+Parameter Sets: (All)
+Aliases:
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: True (ByPropertyName)
+Accept wildcard characters: False
+```
+
+### -Confirm
+Prompts you for confirmation before running the cmdlet.
+
+```yaml
+Type: SwitchParameter
+Parameter Sets: (All)
+Aliases: cf
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
+### -WhatIf
+Shows what would happen if the cmdlet runs.
+The cmdlet is not run.
+
+```yaml
+Type: SwitchParameter
+Parameter Sets: (All)
+Aliases: wi
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
+### CommonParameters
+This cmdlet supports the common parameters: -Debug, -ErrorAction, -ErrorVariable, -InformationAction, -InformationVariable, -OutVariable, -OutBuffer, -PipelineVariable, -Verbose, -WarningAction, and -WarningVariable. For more information, see [about_CommonParameters](http://go.microsoft.com/fwlink/?LinkID=113216).
+
+## INPUTS
+
+### System.String
+
+### System.String[]
+
+### System.Collections.Hashtable
+
+## OUTPUTS
+
+### Microsoft.Azure.Commands.Network.Models.PSCustomIpPrefix
+
+## NOTES
+
+## RELATED LINKS
+
+[Get-AzCustomIpPrefix](./Get-AzCustomIpPrefix.md)
+
+[Remove-AzCustomIpPrefix](./Remove-AzCustomIpPrefix.md)
+
+[Update-AzCustomIpPrefix](./Update-AzCustomIpPrefix.md)
\ No newline at end of file
diff --git a/src/Network/Network/help/Remove-AzCustomIpPrefix.md b/src/Network/Network/help/Remove-AzCustomIpPrefix.md
new file mode 100644
index 000000000000..d99134751767
--- /dev/null
+++ b/src/Network/Network/help/Remove-AzCustomIpPrefix.md
@@ -0,0 +1,220 @@
+---
+external help file: Microsoft.Azure.PowerShell.Cmdlets.Network.dll-Help.xml
+Module Name: Az.Network
+online version: https://docs.microsoft.com/en-us/powershell/module/az.network/remove-azcustomipprefix
+schema: 2.0.0
+---
+
+# Remove-AzCustomIpPrefix
+
+## SYNOPSIS
+Removes a CustomIpPrefix
+
+## SYNTAX
+
+### DeleteByNameParameterSet (Default)
+```
+Remove-AzCustomIpPrefix -Name <String> -ResourceGroupName <String> [-Force] [-PassThru] [-AsJob]
+ [-DefaultProfile <IAzureContextContainer>] [-WhatIf] [-Confirm] [<CommonParameters>]
+```
+
+### DeleteByResourceIdParameterSet
+```
+Remove-AzCustomIpPrefix -ResourceId <String> [-Force] [-PassThru] [-AsJob]
+ [-DefaultProfile <IAzureContextContainer>] [-WhatIf] [-Confirm] [<CommonParameters>]
+```
+
+### DeleteByInputObjectParameterSet
+```
+Remove-AzCustomIpPrefix -InputObject <PSCustomIpPrefix> [-Force] [-PassThru] [-AsJob]
+ [-DefaultProfile <IAzureContextContainer>] [-WhatIf] [-Confirm] [<CommonParameters>]
+```
+
+## DESCRIPTION
+The **Remove-AzCustomIpPrefix** cmdlet removes a CustomIpPrefix.
+
+## EXAMPLES
+
+### Example 1
+```powershell
+PS C:\> Remove-AzCustomIpPrefix -Name $prefixName -ResourceGroupName $rgName
+```
+
+Removes the CustomIpPrefix with Name $prefixName from resource group $rgName
+
+## PARAMETERS
+
+### -AsJob
+Run cmdlet in the background
+
+```yaml
+Type: SwitchParameter
+Parameter Sets: (All)
+Aliases:
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
+### -DefaultProfile
+The credentials, account, tenant, and subscription used for communication with Azure.
+
+```yaml
+Type: IAzureContextContainer
+Parameter Sets: (All)
+Aliases: AzContext, AzureRmContext, AzureCredential
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
+### -Force
+Do not ask for confirmation.
+
+```yaml
+Type: SwitchParameter
+Parameter Sets: (All)
+Aliases:
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
+### -InputObject
+A customIpPrefix object.
+
+```yaml
+Type: PSCustomIpPrefix
+Parameter Sets: DeleteByInputObjectParameterSet
+Aliases:
+
+Required: True
+Position: Named
+Default value: None
+Accept pipeline input: True (ByValue)
+Accept wildcard characters: False
+```
+
+### -Name
+The resource name.
+
+```yaml
+Type: String
+Parameter Sets: DeleteByNameParameterSet
+Aliases: ResourceName
+
+Required: True
+Position: Named
+Default value: None
+Accept pipeline input: True (ByPropertyName)
+Accept wildcard characters: False
+```
+
+### -PassThru
+Returns an object representing the item with which you are working.
+By default, this cmdlet does not generate any output.
+
+```yaml
+Type: SwitchParameter
+Parameter Sets: (All)
+Aliases:
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
+### -ResourceGroupName
+The resource group name.
+
+```yaml
+Type: String
+Parameter Sets: DeleteByNameParameterSet
+Aliases:
+
+Required: True
+Position: Named
+Default value: None
+Accept pipeline input: True (ByPropertyName)
+Accept wildcard characters: False
+```
+
+### -ResourceId
+The resource id.
+
+```yaml
+Type: String
+Parameter Sets: DeleteByResourceIdParameterSet
+Aliases:
+
+Required: True
+Position: Named
+Default value: None
+Accept pipeline input: True (ByPropertyName)
+Accept wildcard characters: False
+```
+
+### -Confirm
+Prompts you for confirmation before running the cmdlet.
+
+```yaml
+Type: SwitchParameter
+Parameter Sets: (All)
+Aliases: cf
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
+### -WhatIf
+Shows what would happen if the cmdlet runs.
+The cmdlet is not run.
+
+```yaml
+Type: SwitchParameter
+Parameter Sets: (All)
+Aliases: wi
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
+### CommonParameters
+This cmdlet supports the common parameters: -Debug, -ErrorAction, -ErrorVariable, -InformationAction, -InformationVariable, -OutVariable, -OutBuffer, -PipelineVariable, -Verbose, -WarningAction, and -WarningVariable. For more information, see [about_CommonParameters](http://go.microsoft.com/fwlink/?LinkID=113216).
+
+## INPUTS
+
+### System.String
+
+### Microsoft.Azure.Commands.Network.Models.PSCustomIpPrefix
+
+## OUTPUTS
+
+### System.Boolean
+
+## NOTES
+
+## RELATED LINKS
+
+[Get-AzCustomIpPrefix](./Get-AzCustomIpPrefix.md)
+
+[New-AzCustomIpPrefix](./New-AzCustomIpPrefix.md)
+
+[Update-AzCustomIpPrefix](./Update-AzCustomIpPrefix.md)
\ No newline at end of file
diff --git a/src/Network/Network/help/Update-AzCustomIpPrefix.md b/src/Network/Network/help/Update-AzCustomIpPrefix.md
new file mode 100644
index 000000000000..a37b5cf8901d
--- /dev/null
+++ b/src/Network/Network/help/Update-AzCustomIpPrefix.md
@@ -0,0 +1,263 @@
+---
+external help file: Microsoft.Azure.PowerShell.Cmdlets.Network.dll-Help.xml
+Module Name: Az.Network
+online version: https://docs.microsoft.com/en-us/powershell/module/az.network/update-azcustomipprefix
+schema: 2.0.0
+---
+
+# Update-AzCustomIpPrefix
+
+## SYNOPSIS
+Updates a CustomIpPrefix
+
+## SYNTAX
+
+### UpdateByNameParameterSet
+```
+Update-AzCustomIpPrefix -Name <String> -ResourceGroupName <String> [-Commission] [-Decomission]
+ [-Tag <Hashtable>] [-AsJob] [-DefaultProfile <IAzureContextContainer>] [-WhatIf] [-Confirm]
+ [<CommonParameters>]
+```
+
+### UpdateByInputObjectParameterSet
+```
+Update-AzCustomIpPrefix -InputObject <PSCustomIpPrefix> [-Commission] [-Decomission] [-Tag <Hashtable>]
+ [-AsJob] [-DefaultProfile <IAzureContextContainer>] [-WhatIf] [-Confirm] [<CommonParameters>]
+```
+
+### UpdateByResourceIdParameterSet
+```
+Update-AzCustomIpPrefix -ResourceId <String> [-Commission] [-Decomission] [-Tag <Hashtable>] [-AsJob]
+ [-DefaultProfile <IAzureContextContainer>] [-WhatIf] [-Confirm] [<CommonParameters>]
+```
+
+## DESCRIPTION
+The **Update-AzCustomIpPrefix** cmdlet allows the user to either commission or decommission their CustomIpPrefix, or edit the tags of the resource.
+
+## EXAMPLES
+
+### Example 1 : Commission the CustomIpPrefix
+```powershell
+PS C:\> Update-AzCustomIpPrefix -Name $prefixName -ResourceGroupName $rgName -Commission
+```
+
+The above command will start the commissioning process of the CustomIpPrefix.
+
+### Example 2 : Decommission the CustomIpPrefix
+```powershell
+PS C:\> Update-AzCustomIpPrefix -Name $prefixName -ResourceGroupName $rgName -Decommission
+```
+
+The above command will start the de-commissioning process of the CustomIpPrefix.
+
+### Example 3 : Update tags for the CustomIpPrefix
+```powershell
+PS C:\> Update-AzCustomIpPrefix -Name $prefixName -ResourceGroupName $rgName -Tag $tags
+```
+
+The above command will update the tags for the CustomIpPrefix.
+
+## PARAMETERS
+
+### -AsJob
+Run cmdlet in the background
+
+```yaml
+Type: SwitchParameter
+Parameter Sets: (All)
+Aliases:
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
+### -Commission
+Run cmdlet in the background
+
+```yaml
+Type: SwitchParameter
+Parameter Sets: (All)
+Aliases:
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
+### -Decomission
+Run cmdlet in the background
+
+```yaml
+Type: SwitchParameter
+Parameter Sets: (All)
+Aliases:
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
+### -DefaultProfile
+The credentials, account, tenant, and subscription used for communication with Azure.
+
+```yaml
+Type: IAzureContextContainer
+Parameter Sets: (All)
+Aliases: AzContext, AzureRmContext, AzureCredential
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
+### -InputObject
+The CustomIpPrefix to set.
+
+```yaml
+Type: PSCustomIpPrefix
+Parameter Sets: SetByInputObjectParameterSet
+Aliases:
+
+Required: True
+Position: Named
+Default value: None
+Accept pipeline input: True (ByValue)
+Accept wildcard characters: False
+```
+
+### -Name
+The resource name.
+
+```yaml
+Type: String
+Parameter Sets: SetByNameParameterSet
+Aliases:
+
+Required: True
+Position: Named
+Default value: None
+Accept pipeline input: True (ByPropertyName)
+Accept wildcard characters: False
+```
+
+### -ResourceGroupName
+The resource group name.
+
+```yaml
+Type: String
+Parameter Sets: SetByNameParameterSet
+Aliases:
+
+Required: True
+Position: Named
+Default value: None
+Accept pipeline input: True (ByPropertyName)
+Accept wildcard characters: False
+```
+
+### -ResourceId
+The resource Id.
+
+```yaml
+Type: String
+Parameter Sets: SetByResourceIdParameterSet
+Aliases:
+
+Required: True
+Position: Named
+Default value: None
+Accept pipeline input: True (ByPropertyName)
+Accept wildcard characters: False
+```
+
+### -Tag
+A hashtable which represents resource tags.
+
+```yaml
+Type: Hashtable
+Parameter Sets: SetByNameParameterSet
+Aliases:
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: True (ByPropertyName)
+Accept wildcard characters: False
+```
+
+```yaml
+Type: Hashtable
+Parameter Sets: SetByInputObjectParameterSet, SetByResourceIdParameterSet
+Aliases:
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: True (ByPropertyName)
+Accept wildcard characters: False
+```
+
+### -Confirm
+Prompts you for confirmation before running the cmdlet.
+
+```yaml
+Type: SwitchParameter
+Parameter Sets: (All)
+Aliases: cf
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
+### -WhatIf
+Shows what would happen if the cmdlet runs.
+The cmdlet is not run.
+
+```yaml
+Type: SwitchParameter
+Parameter Sets: (All)
+Aliases: wi
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
+### CommonParameters
+This cmdlet supports the common parameters: -Debug, -ErrorAction, -ErrorVariable, -InformationAction, -InformationVariable, -OutVariable, -OutBuffer, -PipelineVariable, -Verbose, -WarningAction, and -WarningVariable. For more information, see [about_CommonParameters](http://go.microsoft.com/fwlink/?LinkID=113216).
+
+## INPUTS
+
+### System.String
+
+### Microsoft.Azure.Commands.Network.Models.PSCustomIpPrefix
+
+### System.Collections.Hashtable
+
+## OUTPUTS
+
+### Microsoft.Azure.Commands.Network.Models.PSCustomIpPrefix
+
+## NOTES
+
+## RELATED LINKS
+
+[Get-AzCustomIpPrefix](./Get-AzCustomIpPrefix.md)
+
+[New-AzCustomIpPrefix](./New-AzCustomIpPrefix.md)
+
+[Remove-AzCustomIpPrefix](./Remove-AzCustomIpPrefix.md)
\ No newline at end of file