← Area code 573
573-794 phone numbers
Numbers 573-794-0000 to 573-794-9999 are assigned to Southwestern Bell in Delta, MO. 3 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 573-794-0xxx, 573-794-6xxx, 573-794-7xxx, 573-794-8xxx, 573-794-9xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.