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← Area code 414

414-304 phone numbers

Numbers 414-304-0000 to 414-304-9999 are assigned to Wisconsin Bell Inc (rate centre MILWAUKZN5, WI, NANPA abbreviation). 4 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 414-304