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← Area code 423

423-671 phone numbers

Numbers 423-671-0000 to 423-671-9999 are assigned to Ip Horizon LLC (rate centre CHATTNOOGA, TN, NANPA abbreviation). 9 of its ten thousand-number blocks are assigned to other carriers (number pooling).

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

Reported numbers in 423-671