diff --git a/src/IPStack/GeoLookup.php b/src/IPStack/GeoLookup.php
index 0912559..73e1b7b 100644
--- a/src/IPStack/GeoLookup.php
+++ b/src/IPStack/GeoLookup.php
@@ -65,30 +65,50 @@ public function __construct(string $api_key)
         $this->api_key = $api_key;
     }
 
+    /**
+     * Allows IPv6 addresses to be used.
+     *
+     * @param string $ip The IP to be formatted.
+     *
+     * @return string
+     */
+    public function formatIp(string $ip)
+    {
+        if (\filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6)) {
+            return \urlencode($ip);
+        }
+
+        return $ip;
+    }
+
     /**
      * Retrieve a location for a specific IP address.
      *
-     * @param  string $ip The IP to lookup.
+     * @param string $ip The IP to lookup.
      *
      * @return array|null
      * @throws \Exception
      */
     public function getLocation(string $ip)
     {
+        $ip = $this->formatIp($ip);
+
         try {
-            $response = (new Client([
+            $response = (new Client(
+                [
                 'base_uri' => (
                     ($this->use_https)
                         ? 'https'
                         : 'http'
                 ).'://api.ipstack.com/',
                 'timeout' => $this->timeout,
-            ]))->get(
+                ]
+            ))->get(
                 $ip.'?access_key='.$this->api_key.
-                '&output=json'.
-                ($this->find_hostname ? '&hostname=1' : '').
-                ($this->assess_security ? '&security=1' : '').
-                '&language='.$this->language
+                    '&output=json'.
+                    ($this->find_hostname ? '&hostname=1' : '').
+                    ($this->assess_security ? '&security=1' : '').
+                    '&language='.$this->language
             );
 
             return $this->processResponse($response);
@@ -112,19 +132,21 @@ public function getLocations(string ...$ips)
         }
 
         try {
-            $response = (new Client([
+            $response = (new Client(
+                [
                 'base_uri' => (
                     ($this->use_https)
                         ? 'https'
                         : 'http'
                 ).'://api.ipstack.com/',
                 'timeout' => $this->timeout,
-            ]))->get(
+                ]
+            ))->get(
                 implode(',', $ips).'?access_key='.$this->api_key.
-                '&output=json'.
-                ($this->find_hostname ? '&hostname=1' : '').
-                ($this->assess_security ? '&security=1' : '').
-                '&language='.$this->language
+                    '&output=json'.
+                    ($this->find_hostname ? '&hostname=1' : '').
+                    ($this->assess_security ? '&security=1' : '').
+                    '&language='.$this->language
             );
 
             return $this->processResponse($response);
@@ -142,19 +164,21 @@ public function getLocations(string ...$ips)
     public function getOwnLocation()
     {
         try {
-            $response = (new Client([
+            $response = (new Client(
+                [
                 'base_uri' => (
                     ($this->use_https)
                         ? 'https'
                         : 'http'
                 ).'://api.ipstack.com/',
                 'timeout' => $this->timeout,
-            ]))->get(
+                ]
+            ))->get(
                 'check?access_key='.$this->api_key.
-                '&output=json'.
-                ($this->find_hostname ? '&hostname=1' : '').
-                ($this->assess_security ? '&security=1' : '').
-                '&language='.$this->language
+                    '&output=json'.
+                    ($this->find_hostname ? '&hostname=1' : '').
+                    ($this->assess_security ? '&security=1' : '').
+                    '&language='.$this->language
             );
 
             return $this->processResponse($response);
@@ -185,7 +209,7 @@ private function processResponse($response)
     /**
      * Returns a location for the current clients IP address.
      *
-     * @return \FreeGeoIp\PHP\Location
+     * @return array|null
      * @throws \Exception
      */
     public function getClientLocation()
@@ -197,7 +221,7 @@ public function getClientLocation()
             throw new \Exception('Error: Unable to find client IP address.');
         }
 
-        return $this->getLocationFor($ip);
+        return $this->getLocation($ip);
     }
 
     /**
@@ -206,7 +230,7 @@ public function getClientLocation()
      *
      * @param bool $value The new value.
      *
-     * @see https://ipstack.com/documentation#hostname
+     * @see    https://ipstack.com/documentation#hostname
      * @return \IPStack\PHP\GeoLookup
      */
     public function setFindHostname(bool $value)
@@ -256,7 +280,7 @@ public function isUsingHttps()
      *
      * @param bool $value The new value.
      *
-     * @see https://ipstack.com/documentation#security
+     * @see    https://ipstack.com/documentation#security
      * @return \IPStack\PHP\GeoLookup
      */
     public function assessSecurity(bool $value)
@@ -305,7 +329,7 @@ public function getTimeout()
      *
      * @param int $value The new language.
      *
-     * @see https://ipstack.com/documentation#language
+     * @see    https://ipstack.com/documentation#language
      * @return \IPStack\PHP\GeoLookup
      */
     public function setLanguage(string $language)
diff --git a/src/IPStack/Legacy/FreeGeoIp.php b/src/IPStack/Legacy/FreeGeoIp.php
index fe448c8..0779495 100644
--- a/src/IPStack/Legacy/FreeGeoIp.php
+++ b/src/IPStack/Legacy/FreeGeoIp.php
@@ -37,9 +37,9 @@ class FreeGeoIp
      */
     public function __construct(
         string $server_address,
-        int    $server_port = 8080,
+        int $server_port = 8080,
         string $server_protocol = 'http',
-        int    $timeout = 10
+        int $timeout = 10
     ) {
         $this->server_url = $server_protocol.'://'
         .$server_address.':'.$server_port.'/';
@@ -87,7 +87,7 @@ public function getClientLocation()
             throw new \Exception('Unable to find client IP address.');
         }
 
-        return $this->getLocationFor($ip);
+        return $this->getLocation($ip);
     }
 
     /**