423-372 phone numbers

Numbers 423-372-0000 to 423-372-9999 are assigned to Level 3 Communications, LLC in Jellico, TN. 3 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 423-372-1xxx, 423-372-3xxx, 423-372-4xxx, 423-372-5xxx, 423-372-7xxx, 423-372-9xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 423-372