About this number
(303) 835 is a landline based telephone number operated by Level 3 Communications, LLC - and is located in zip code 80203 in the city of Denver, Colorado, which is in Denver County, and is in the West. It has a Number Planning Area (NPA - also known as an Area Code) of 303 and Network Numbering Exchange (NXX - also known as a prefix) of 835. It has an Operating Company Number (OCN) of 6118. A Common Language Location Identifier (CLLI) of DNVTCO56DS2. As well as a Local access and transport area (LATA) of 656. Zip code 80203 has a population of 18,839 as of the 2010 census.