423-606 phone numbers

Numbers 423-606-0000 to 423-606-9999 are assigned to Comcast Ip Phone, LLC in Englewood, TN. 2 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 423-606-2xxx, 423-606-3xxx, 423-606-4xxx, 423-606-5xxx, 423-606-7xxx, 423-606-8xxx, 423-606-9xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 423-606