About this number
(408) 600-1478 is a landline based telephone number operated by Level 3 Communications, LLC - 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 600 and a subscriber number of 1478. It has an Operating Company Number (OCN) of 8826. A Common Language Location Identifier (CLLI) of NOCLLIKNOWN. As well as a Local access and transport area (LATA) of 722. It was first assigned for usage on 09/26/2007. Zip code 94520 has a population of 37,208 as of the 2010 census.