810-678 phone numbers

Numbers 810-678-0000 to 810-678-9999 are assigned to Frontier North, Inc. in Metamora, MI. 5 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 810-678-5xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 810-678