US employer identification number, two digits, a dash, then seven. The shape is distinctive enough to be usable on its own, though a nine-digit reference written the same way would match.
Label: US_EIN
\b\d{2}-\d{7}\bEIN 12-3456789 on file. → 12-3456789Taxpayer 98-7654321 filed late. → 98-7654321123-45-678912-34567890Tags: us, business, finance, accounting