← Area code 534
534-504 phone numbers
Numbers 534-504-0000 to 534-504-9999 are assigned to Commio, LLC in Eau Claire, WI. 1 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 534-504-0xxx, 534-504-1xxx, 534-504-2xxx, 534-504-3xxx, 534-504-5xxx, 534-504-6xxx, 534-504-7xxx, 534-504-8xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.