← Area code 608
608-981 phone numbers
Numbers 608-981-0000 to 608-981-9999 are assigned to Frontier North Inc. (rate centre BRIGGSVL, WI, NANPA abbreviation). 7 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 608-981-5xxx, 608-981-9xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.