320-523 phone numbers

Numbers 320-523-0000 to 320-523-9999 are assigned to Qwest Corporation in Olivia, MN. 5 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 320-523-4xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 320-523