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← Area code 618

618-278 phone numbers

Numbers 618-278-0000 to 618-278-9999 are assigned to Frontier Communications-Midland, Inc. (rate centre WOODBURN, IL, NANPA abbreviation). 6 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 618-278