About this number
(301) 321 is a landline based telephone number operated by Telcove Operations, Inc. - Md and is located in zip code 20815 in the city of Chevy Chase, Maryland, which is in Montgomery 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 321. It has an Operating Company Number (OCN) of 4749. A Common Language Location Identifier (CLLI) of CHCHMDBE5MD. As well as a Local access and transport area (LATA) of 236. Zip code 20815 has a population of 29,082 as of the 2010 census.