About this number
(312) 600 is a landline based telephone number operated by Neutral Tandem-Illinois, LLC - and is located in zip code 60607 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 600. It has an Operating Company Number (OCN) of 505B. A Common Language Location Identifier (CLLI) of CHCGIL24DS6. As well as a Local access and transport area (LATA) of 358. Zip code 60607 has a population of 23,897 as of the 2010 census.