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301-665 phone numbers

Numbers 301-665-0000 to 301-665-9999 are assigned to Verizon Maryland, Inc. in Hagerstown, MD. 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 301-665