concrete/src/Utility/IPAddress.php
public function isPrivate()
    {
        if (!$this->isIpSet()) {
            throw new \Exception('No IP Set');
        }
        if (
            ($this->isIPv4() &&
                (strpos($this->ipHex, '0a') === 0 //10.0.0.0/8
                || strpos($this->ipHex, 'ac1') === 0 //172.16.0.0/12
                || strpos($this->ipHex, 'c0a8') === 0 //192.168.0.0/16
                )
            )
            ||
            ($this->isIPv6() &&
                (strpos($this->ipHex, 'fc') === 0 //fc00::/7
                || strpos($this->ipHex, 'fd') === 0 //fd00::/7
                || strpos($this->ipHex, 'ffff0a') === 20 //::ffff:10.0.0.0/8
                || strpos($this->ipHex, 'ffffac1') === 20 //::ffff:172.16.0.0/12
                || strpos($this->ipHex, 'ffffc0a8') === 20 //::ffff:192.168.0.0/16
                )
            )
        ) {
            return true;
        }

        return false;
    }
public function isPrivate()
    {
        if (!$this->isIpSet()) {
            throw new \Exception('No IP Set');
        }
        if (
            ($this->isIPv4() &&
                (strpos($this->ipHex, '0a') === 0 //10.0.0.0/8
                || strpos($this->ipHex, 'ac1') === 0 //172.16.0.0/12
                || strpos($this->ipHex, 'c0a8') === 0 //192.168.0.0/16
                )
            )
            ||
            ($this->isIPv6() &&
                (strpos($this->ipHex, 'fc') === 0 //fc00::/7
                || strpos($this->ipHex, 'fd') === 0 //fd00::/7
                || strpos($this->ipHex, 'ffff0a') === 20 //::ffff:10.0.0.0/8
                || strpos($this->ipHex, 'ffffac1') === 20 //::ffff:172.16.0.0/12
                || strpos($this->ipHex, 'ffffc0a8') === 20 //::ffff:192.168.0.0/16
                )
            )
        ) {
            return true;
        }

        return false;
    }
public function isPrivate ( ) { if ( ! $ this -> isIpSet ( ) ) { throw new \ Exception ( 'No IP Set' ) ; } if ( ( $ this -> isIPv4 ( ) && ( strpos ( $ this -> ipHex , '0a' ) === 0 //10.0.0.0/8 || strpos ( $ this -> ipHex , 'ac1' ) === 0 //172.16.0.0/12 || strpos ( $ this -> ipHex , 'c0a8' ) === 0 //192.168.0.0/16 ) ) || ( $ this -> isIPv6 ( ) && ( strpos ( $ this -> ipHex , 'fc' ) === 0 //fc00::/7 || strpos ( $ this -> ipHex , 'fd' ) === 0 //fd00::/7 || strpos ( $ this -> ipHex , 'ffff0a' ) === 20 //::ffff:10.0.0.0/8 || strpos ( $ this -> ipHex , 'ffffac1' ) === 20 //::ffff:172.16.0.0/12 || strpos ( $ this -> ipHex , 'ffffc0a8' ) === 20 //::ffff:192.168.0.0/16 ) ) ) { return true ; } return false ; }
Returns true if the IP address belongs to a private network, false if it is not.

@return bool

@throws \Exception
Returns true if the IP address belongs to a private network false if it is not .