← Area code 608
608-612 phone numbers
Numbers 608-612-0000 to 608-612-9999 are assigned to Charter Ip Enabled Services, LLC in West Salem, WI. 4 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 608-612-1xxx, 608-612-4xxx, 608-612-5xxx, 608-612-7xxx, 608-612-9xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.