603-712 phone numbers

Numbers 603-712-0000 to 603-712-9999 are assigned to Mcimetro Access Transmission Services LLC (rate centre PIKE, NH, NANPA abbreviation). 5 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 603-712-2xxx, 603-712-4xxx, 603-712-7xxx, 603-712-8xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 603-712