248-256 phone numbers

Numbers 248-256-0000 to 248-256-9999 are assigned to Level 3 Communications, LLC in Oxford, MI. 7 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 248-256-9xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 248-256