Regex Tester & Validator

This regex attempts to validate IPv4 addresses but contains incorrect octet ranges. The first octet matches 0-29, 100-199, and 200-247, while subsequent octets only cover 0-29, 100-199, and 200-205. Major gaps exist (e.g., 30-99 is unmatched, and valid IPs ending in 206-255 would fail). Uses multiline mode to match IP-like patterns line by line. Appears to be a homework exercise with flawed validation logic.