About this number
(909) 421 is a landline based telephone number operated by Pacific Bell and is located in zip code 92376 in the city of Rialto, California, which is in San Bernardino County, and is in the West. It has a Number Planning Area (NPA - also known as an Area Code) of 909 and Network Numbering Exchange (NXX - also known as a prefix) of 421. It has an Operating Company Number (OCN) of 9740. A Common Language Location Identifier (CLLI) of RILTCA11DS0. As well as a Local access and transport area (LATA) of 730. Zip code 92376 has a population of 81,516 as of the 2010 census.