About this number
(815) 437 is a landline based telephone number operated by Frontier North, Inc. - Il and is located in zip code 61560 in the city of Putnam, Illinois, which is in Putnam 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 437. It has an Operating Company Number (OCN) of 1036. A Common Language Location Identifier (CLLI) of PTNMILXDDS0. As well as a Local access and transport area (LATA) of 368. Zip code 61560 has a population of 754 as of the 2010 census.