IPv4 Subnet Calculator (GO)

Network calculator for subnet mask and other classless (CIDR) network information.

This is a fork

This is a fork from https://github.com/brotherpowers/ipsubnet

I would do a pull request but that breaks the API. I converted all int to int64 so that it would compile on 32 bit system. Calls to ipsubnet need to be int64 and not int, and would break code for people using this. So I kept it separate, but wanted to give credit to the person that made it.

I've not done extensive tests or even changed ip_test.go -- it works for what I need it to do, and I have to move on with the project I had to make this change for instead of further development.

Calculations

• IP address network subnet masks, network and host portions, and provides aggregated reports.
• Subnet mask
• Network portion
• Host portion
• Number of IP addresses in the network
• Number of addressable hosts in the network
• IP address range
• Broadcast address

Provides each data in dotted quads, hexadecimal, and binary formats, as well as array of quads.

Usages

Install

go get -u github.com/rmasci/ipsubnet

Get Started

import "github.com/rmasci/ipsubnet"

sub := ipsubnet.SubnetCalculator("192.168.112.203", 23)

Get Network Information

sub.GetNumberIPAddresses();      // 512
sub.GetNumberAddressableHosts(); // 510
sub.GetIPAddressRange();         // [ 192.168.112.0, 192.168.113.255 ]
sub.GetNetworkSize();            // 23
sub.GetBroadcastAddress();       // 192.168.113.255

Get IP Address

sub.GetIPAddress();       // 192.168.112.203
sub.GetIPAddressQuads();  // [ 192, 168, 112, 203 ]
sub.GetIPAddressHex();    // C0A870CB
sub.GetIPAddressBinary(); // 11000000101010000111000011001011

Get Subnet Mask

sub.GetSubnetMask();       // 255.255.254.0
sub.GetSubnetMaskQuads();  // [ 255, 255, 254, 0 ]
sub.GetSubnetMaskHex();    // FFFFFE00
sub.GetSubnetMaskBinary(); // 11111111111111111111111000000000

Get Network Portion

sub.GetNetworkPortion();       // 192.168.112.0
sub.GetNetworkPortionQuads();  // [ 192, 168, 112, 0 ]
sub.GetNetworkPortionHex();    // C0A87000
sub.GetNetworkPortionBinary(); // 11000000101010000111000000000000

Get Host Portion

sub.GetHostPortion();       // 0.0.0.203
sub.GetHostPortionQuads();  // [ 0, 0, 0, 203 ]
sub.GetHostPortionHex();    // 000000CB
sub.GetHostPortionBinary(); // 00000000000000000000000011001011

Based On

IPv4 Subnet Calculator ( PHP )

License

IPv4 Subnet Calculator (GO) is licensed under the MIT License.