About this number
(312) 449 is a wireless/mobile based telephone number operated by American Messaging (Am), Inc. and is located in zip code 61257 in the city of Hillsdale, Illinois, which is in Dupage 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 449. It has an Operating Company Number (OCN) of 9748. A Common Language Location Identifier (CLLI) of BURGILAHCM0. As well as a Local access and transport area (LATA) of 358. It was first assigned for usage on 04/23/2001. Zip code 61257 has a population of 1,210 as of the 2010 census.