About this number
(312) 376 is a landline based telephone number operated by Cbeyond Communications, LLC - and is located in zip code 60605 in the city of Chicago, Illinois, which is in Cook County, and is in the Midwest. It has a Number Planning Area (NPA - also known as an Area Code) of 312 and Network Numbering Exchange (NXX - also known as a prefix) of 376. It has an Operating Company Number (OCN) of 2491. A Common Language Location Identifier (CLLI) of CHCGILWBCA0. As well as a Local access and transport area (LATA) of 358. It was first assigned for usage on 06/11/2004. Zip code 60605 has a population of 24,668 as of the 2010 census.