Regex Tester & Validator

Matches a specific numeric pattern of three digits, a dot, three digits, another dot, a single digit, and a final dot followed by a single digit (e.g., 123.456.7.8). This regex is useful for validating or extracting strings that follow this exact fixed-length format, such as certain serial numbers, version identifiers, or abbreviated IP-like codes. It ensures strict segment lengths, so it will not match standard IPv4 addresses with variable octet lengths.