608-523 phone numbers

Numbers 608-523-0000 to 608-523-9999 are assigned to Utelco, Inc. (rate centre BLANCHADVL, WI, NANPA abbreviation). 5 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 608-523-5xxx, 608-523-6xxx — calls from these use spoofed caller IDs.

Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.

Reported numbers in 608-523