509-296 phone numbers

Numbers 509-296-0000 to 509-296-9999 are assigned to T-Mobile USA, Inc. in Pullman, WA. 3 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 509-296-3xxx, 509-296-4xxx, 509-296-5xxx, 509-296-6xxx, 509-296-7xxx, 509-296-8xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 509-296