About this number
(301) 456 is a landline based telephone number operated by Comcast Phone Of Northern Mary and is located in zip code 22304 in the city of Alexandria, Maryland, which is in Fairfax County, and is in the South. It has a Number Planning Area (NPA - also known as an Area Code) of 301 and Network Numbering Exchange (NXX - also known as a prefix) of 456. It has an Operating Company Number (OCN) of 107D. A Common Language Location Identifier (CLLI) of ALXNVAGB1MD. As well as a Local access and transport area (LATA) of 236. Zip code 22304 has a population of 44,300 as of the 2010 census.