Regex Tester & Validator
Test, validate and match regular expressions
Test, validate and match regular expressions
This PCRE regex with global flag matches IPv4 addresses in dotted-decimal notation. Each octet validates numbers from 0-255 using alternation for 1-2 digit numbers (0-99), 100-199, and 200-255 ranges. Useful for extracting or validating IP addresses from logs, network configurations, firewall rules, or any text containing network identifiers.