← Area code 681
681-620 phone numbers
Numbers 681-620-0000 to 681-620-9999 are assigned to United States Cellular in Keyser, WV. 6 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 681-620-3xxx, 681-620-4xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.