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← Area code 331

331-252 phone numbers

Numbers 331-252-0000 to 331-252-9999 are assigned to Teleport Communications America, LLC (rate centre WARRENVL, IL, NANPA abbreviation). 6 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 331-252-2xxx, 331-252-3xxx, 331-252-5xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 331-252