423-940 phone numbers

Numbers 423-940-0000 to 423-940-9999 are assigned to Commio, LLC in Dayton, TN. 2 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 423-940-1xxx, 423-940-2xxx, 423-940-3xxx, 423-940-4xxx, 423-940-5xxx, 423-940-6xxx, 423-940-7xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 423-940