← Area code 207
207-643 phone numbers
Numbers 207-643-0000 to 207-643-9999 are assigned to Somerset Tel. Co. (rate centre SOLON, ME, NANPA abbreviation). 4 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 207-643-4xxx, 207-643-5xxx, 207-643-7xxx, 207-643-8xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.