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← Area code 313

313-307 phone numbers

Numbers 313-307-0000 to 313-307-9999 are assigned to Onvoy, Llcv (rate centre DETROITZN4, MI, NANPA abbreviation). 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 313-307