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← Area code 314

314-255 phone numbers

Numbers 314-255-0000 to 314-255-9999 are assigned to Xo Missouri, Inc. in St. Louis, MO. 7 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 314-255