Welcome to IPUtil’s documentation!
Your are reading the documentation of IPUtil which is a library written in PHP to help you to handle IP addresses and IP ranges. It supports IPv4 and IPv6 addresses and IP ranges for both versions. You can create IP address instances from multiple formats and then convert them to other formats as well. Probably one of the most useful features is generating multiple CIDR notations from any two IP addresses (lowest and highest) so you can use it in a software that requires CIDR notations to restrict access to an interface and regenerate it any time using the library.