313-556 phone numbers

Numbers 313-556-0000 to 313-556-9999 are assigned to Michigan Bell Tel Co (rate centre DETROITZN1, MI, NANPA abbreviation). 6 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 313-556