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← Area code 331

331-240 phone numbers

Numbers 331-240-0000 to 331-240-9999 are assigned to Peerless Network of Illinois, LLC (rate centre W CHICAGO, IL, NANPA abbreviation). 8 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 331-240