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← Area code 231

231-216 phone numbers

Numbers 231-216-0000 to 231-216-9999 are assigned to Peerless Network of Michigan, LLC in Frankfort, MI. 8 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 231-216