309-501 phone numbers

Numbers 309-501-0000 to 309-501-9999 are assigned to T-Mobile USA, Inc. in Washington, IL. 4 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 309-501-6xxx, 309-501-7xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 309-501