About this number
(712) 678 is a landline based telephone number operated by Frontier Communications Of Iow and is located in zip code 51439 in the city of Charter Oak, Iowa, which is in Crawford County, and is in the Midwest. It has a Number Planning Area (NPA - also known as an Area Code) of 712 and Network Numbering Exchange (NXX - also known as a prefix) of 678. It has an Operating Company Number (OCN) of 1127. A Common Language Location Identifier (CLLI) of CHROIAXORS6. As well as a Local access and transport area (LATA) of 644. Zip code 51439 has a population of 1,047 as of the 2010 census.