Canadial Know Who Called
← Area code 423

423-537 phone numbers

Numbers 423-537-0000 to 423-537-9999 are assigned to Paetec Itel, LLC in Bulls Gap, TN. 3 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 423-537-0xxx, 423-537-7xxx, 423-537-9xxx — calls from these use spoofed caller IDs.

Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.

Reported numbers in 423-537