About this number
(301) 712 is a landline based telephone number operated by McI Worldcom Communications, I and is located in zip code 21701 in the city of Frederick, Maryland, which is in Frederick 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 712. It has an Operating Company Number (OCN) of 7228. A Common Language Location Identifier (CLLI) of FRDRMDFRLMD. As well as a Local access and transport area (LATA) of 240. Zip code 21701 has a population of 35,293 as of the 2010 census.