Regex Tester & Validator

Matches valid IPv4 addresses by validating four octets separated by dots, where each octet ranges from 0-255. The pattern enforces numeric ranges through alternation: single digits (0-9), double digits (10-99), 100-199, and 200-255. Commonly used for network configuration validation, log parsing, and IP address filtering in security applications. Note: This pattern has a minor edge case allowing values like 256-259 due to the final `[0-5]` in the last alternation.