301-391 phone numbers

Numbers 301-391-0000 to 301-391-9999 are assigned to Verizon Maryland, Inc. (rate centre DAMASCS236, MD, NANPA abbreviation). 9 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 301-391