Build, test, and debug regular expressions
This regular expression matches valid IPv4 addresses, strictly enforcing a "no leading zeros" rule. It successfully validates IP ranges from 0.0.0.0 to 255.255.255.255, rejecting invalid formats like 192.168.01.1. Using the global and multiline flags, it can extract or validate multiple IP addresses from a multi-line text block. This makes it ideal for network utilities, input validation, and log parsing where strict IP formatting is essential.