563-800 phone numbers

Numbers 563-800-0000 to 563-800-9999 are assigned to Onvoy, LLC in Calmar, IA. 2 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 563-800-2xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 563-800