603-779 phone numbers

Numbers 603-779-0000 to 603-779-9999 are assigned to Mcimetro Access Transmission Services LLC in Plymouth, NH. 6 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 603-779-2xxx, 603-779-4xxx, 603-779-7xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 603-779