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← Area code 331

331-312 phone numbers

Numbers 331-312-0000 to 331-312-9999 are assigned to Verizon Wireless in Aurora, IL. 4 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 331-312