About this number
(618) 566 is a landline based telephone number operated by Frontier North, Inc. - Il and is located in zip code 62258 in the city of Mascoutah, 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 566. It has an Operating Company Number (OCN) of 1036. A Common Language Location Identifier (CLLI) of MSCTILXEDS0. As well as a Local access and transport area (LATA) of 520. Zip code 62258 has a population of 9,199 as of the 2010 census.