531-271 phone numbers

Numbers 531-271-0000 to 531-271-9999 are assigned to United States Cellular in O'Neill, NE. 4 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 531-271-0xxx, 531-271-2xxx, 531-271-3xxx, 531-271-5xxx, 531-271-6xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 531-271