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← Area code 410

410-623 phone numbers

Numbers 410-623-0000 to 410-623-9999 are assigned to Verizon Maryland, Inc. (rate centre MARION, MD, 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 410-623