About this number
(712) 439 is a landline based telephone number operated by Heartland Telecom Company Of I and is located in zip code 51239 in the city of Hull, Iowa, which is in Sioux 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 439. It has an Operating Company Number (OCN) of 1109. A Common Language Location Identifier (CLLI) of HULLIAACRS4. As well as a Local access and transport area (LATA) of 630. Zip code 51239 has a population of 3,123 as of the 2010 census.