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← Area code 864

864-780 phone numbers

Numbers 864-780-0000 to 864-780-9999 are assigned to Onvoy, LLC in Clemson, SC. 5 of its ten thousand-number blocks are assigned to other carriers (number pooling).

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

Reported numbers in 864-780