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← Area code 520

520-644 phone numbers

Numbers 520-644-0000 to 520-644-9999 are assigned to Fractel, LLC in Komatke, AZ. 1 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 520-644-0xxx, 520-644-1xxx, 520-644-2xxx, 520-644-3xxx, 520-644-5xxx, 520-644-7xxx, 520-644-8xxx, 520-644-9xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 520-644