Canadial Know Who Called
← Area code 712

712-423 phone numbers

Numbers 712-423-0000 to 712-423-9999 are assigned to Qwest Corporation in Onawa, IA. 4 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 712-423-7xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 712-423