Regex Tester & Validator

Matches a line beginning with exactly 12 digits, followed by a space and any sequence of uppercase letters, digits, spaces, periods, and angle brackets up to the end of the line. With global and multiline flags enabled, it finds all such matches across every line in a multi-line string. Useful for parsing structured records or log files where lines start with a 12-digit identifier (e.g., account numbers or timestamps) followed by uppercase descriptive text.