← Area code 573
573-585 phone numbers
Numbers 573-585-0000 to 573-585-9999 are assigned to Onvoy, LLC in Ellsinore, MO. 1 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 573-585-1xxx, 573-585-2xxx, 573-585-3xxx, 573-585-4xxx, 573-585-6xxx, 573-585-7xxx, 573-585-8xxx, 573-585-9xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.