About this number
(815) 580 is a landline based telephone number operated by At&T Local and is located in zip code 61101 in the city of Rockford, Illinois, which is in Winnebago County, and is in the Midwest. It has a Number Planning Area (NPA - also known as an Area Code) of 815 and Network Numbering Exchange (NXX - also known as a prefix) of 580. It has an Operating Company Number (OCN) of 7421. A Common Language Location Identifier (CLLI) of RCFRILRCSMD. As well as a Local access and transport area (LATA) of 360. It was first assigned for usage on 03/18/2003. Zip code 61101 has a population of 21,593 as of the 2010 census.