307-479 phone numbers

Numbers 307-479-0000 to 307-479-9999 are assigned to Onvoy, LLC in Powell, WY. 4 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 307-479-4xxx, 307-479-5xxx, 307-479-6xxx, 307-479-7xxx, 307-479-9xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 307-479