About this number
(203) 991-0010 is a landline based telephone number operated by Southern New England Telephone and is located in zip code 06854 in the city of Norwalk, Connecticut, which is in Fairfield County, and is in the Northeast. It has a Number Planning Area (NPA - also known as an Area Code) of 203, a Network Numbering Exchange (NXX - also known as a prefix) of 991 and a subscriber number of 0010. It has an Operating Company Number (OCN) of 9147. A Common Language Location Identifier (CLLI) of NRWLCT02DS2. As well as a Local access and transport area (LATA) of 920. Zip code 06854 has a population of 29,100 as of the 2010 census.