About this number
(301) 973-0021 is a landline based telephone number operated by Verizon Maryland, Inc. and is located in zip code 21044 in the city of Columbia, Maryland, which is in Howard County, and is in the South. It has a Number Planning Area (NPA - also known as an Area Code) of 301, a Network Numbering Exchange (NXX - also known as a prefix) of 973 and a subscriber number of 0021. It has an Operating Company Number (OCN) of 9212. A Common Language Location Identifier (CLLI) of CLMAMDCBDS0. As well as a Local access and transport area (LATA) of 238. Zip code 21044 has a population of 41,704 as of the 2010 census.