← Area code 712
712-398 phone numbers
Numbers 712-398-0000 to 712-398-9999 are assigned to Stratus Networks in Onawa, IA. 2 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 712-398-0xxx, 712-398-2xxx, 712-398-3xxx, 712-398-4xxx, 712-398-5xxx, 712-398-6xxx, 712-398-7xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.