Description Removes last byte for IPV4 addresses and last 8 bytes for IPV6 Syntax use Symfony\Component\HttpFoundation\IpUtils; $ipv4 = '123.234.235.236'; $anonymousIpv4 = IPUtils::anonymize($ipv4); // $anonymousIpv4 = '123.234.235.0' $ipv6 = '2a01:198:603:10:396e:4789:8e99:890f'; $anonymousIpv6 = IPUtils::anonymize($ipv6); // $anonymousIpv6 = '2a01:198:603:10::'