About this number
(618) 628 is a landline based telephone number operated by Ameritech Illinois and is located in zip code 62269 in the city of O Fallon, Illinois, which is in St Clair County, and is in the Midwest. It has a Number Planning Area (NPA - also known as an Area Code) of 618 and Network Numbering Exchange (NXX - also known as a prefix) of 628. It has an Operating Company Number (OCN) of 9329. A Common Language Location Identifier (CLLI) of OFLNILMQDS0. As well as a Local access and transport area (LATA) of 520. Zip code 62269 has a population of 31,348 as of the 2010 census.