509-712 phone numbers

Numbers 509-712-0000 to 509-712-9999 are assigned to T-Mobile USA, Inc. in Sunnyside, WA. 5 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 509-712-1xxx, 509-712-6xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 509-712