← Area code 608
608-428 phone numbers
Numbers 608-428-0000 to 608-428-9999 are assigned to Verizon Wireless (rate centre PRARIDCHIN, WI, NANPA abbreviation). 1 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 608-428-0xxx, 608-428-1xxx, 608-428-2xxx, 608-428-4xxx, 608-428-5xxx, 608-428-6xxx, 608-428-7xxx, 608-428-8xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.