Canadial Know Who Called
← Area code 307

307-500 phone numbers

Numbers 307-500-0000 to 307-500-9999 are assigned to Onvoy, LLC (rate centre BORDER, WY, NANPA abbreviation). 6 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 307-500-0xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 307-500