About this number
(815) 786 is a landline based telephone number operated by Frontier North, Inc. - Il and is located in zip code 60548 in the city of Sandwich, Illinois, which is in Dekalb County, and is in the Midwest. It has a Number Planning Area (NPA - also known as an Area Code) of 815 and Network Numbering Exchange (NXX - also known as a prefix) of 786. It has an Operating Company Number (OCN) of 1015. A Common Language Location Identifier (CLLI) of SNDWILXADS0. As well as a Local access and transport area (LATA) of 358. Zip code 60548 has a population of 12,218 as of the 2010 census.