← Area code 207
207-278 phone numbers
Numbers 207-278-0000 to 207-278-9999 are assigned to West Penobscot Tel. & Tel. Co in Corinna, ME. 3 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 207-278-1xxx, 207-278-6xxx, 207-278-7xxx, 207-278-8xxx, 207-278-9xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.