About this number
(860) 663 is a landline based telephone number operated by Southern New England Telephone and is located in zip code 06443 in the city of Madison, Connecticut, which is in New Haven County, and is in the Northeast. It has a Number Planning Area (NPA - also known as an Area Code) of 860 and Network Numbering Exchange (NXX - also known as a prefix) of 663. It has an Operating Company Number (OCN) of 9147. A Common Language Location Identifier (CLLI) of MDSNCT02RS0. As well as a Local access and transport area (LATA) of 920. Zip code 06443 has a population of 18,269 as of the 2010 census.