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← Area code 878

878-255 phone numbers

Numbers 878-255-0000 to 878-255-9999 are assigned to Onvoy Spectrum, LLC in Aliquippa, PA. 9 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 878-255