About this number
(510) 669 is a landline based telephone number operated by Pacific Bell and is located in zip code 94803 in the city of El Sobrante, 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 510 and Network Numbering Exchange (NXX - also known as a prefix) of 669. It has an Operating Company Number (OCN) of 9740. A Common Language Location Identifier (CLLI) of ELSBCA11DS0. As well as a Local access and transport area (LATA) of 722. Zip code 94803 has a population of 24,904 as of the 2010 census.