About this number
(408) 310-4853 is a landline based telephone number operated by McI Worldcom Communications, I and is located in zip code 94520 in the city of Concord, California, which is in Contra Costa County, and is in the West. It has a Number Planning Area (NPA - also known as an Area Code) of 408, a Network Numbering Exchange (NXX - also known as a prefix) of 310 and a subscriber number of 4853. It has an Operating Company Number (OCN) of 7240. A Common Language Location Identifier (CLLI) of SNJSCARMDS0. As well as a Local access and transport area (LATA) of 722. It was first assigned for usage on 11/15/2005. Zip code 94520 has a population of 37,208 as of the 2010 census.