Regex Editor & Tester

Matches lines containing 6 to 16 characters consisting only of uppercase letters (A-Z) and digits (0-9), anchored to the start and end of each line via the multiline flag. It is typically used to validate vehicle engine numbers (número de motor) or similar alphanumeric identification codes stamped on serial plates. Combined with the global flag, it can extract or validate multiple engine numbers listed one per line.