Regex Tester & Validator
Test, validate and match regular expressions
Test, validate and match regular expressions
Matches valid IPv4 addresses (0.0.0.0 through 255.255.255.255) in text while avoiding partial matches within longer dotted numbers. Uses negative lookbehind and lookahead to ensure proper word boundaries on both sides of the address. Ideal for extracting IP addresses from log files, network configurations, or any text containing embedded IPs.