Regex Tester & Validator

This regular expression matches Italian driving license identifiers (Identificativo Patente Italiana) that start with the prefix "U1". It strictly validates a 10-character format consisting of the initial prefix, seven alphanumeric characters, and ending with a single alphabetic character. With the global, multiline, and case-insensitive flags applied, it is highly effective for extracting or validating these official IDs within larger blocks of text.