About this number
(406) 398 is a landline based telephone number operated by Triangle Telephone Cooperative and is located in zip code 59501 in the city of Havre, Montana, which is in Hill County, and is in the West. It has a Number Planning Area (NPA - also known as an Area Code) of 406 and Network Numbering Exchange (NXX - also known as a prefix) of 398. It has an Operating Company Number (OCN) of 2257. A Common Language Location Identifier (CLLI) of NHVRMTXCRS1. As well as a Local access and transport area (LATA) of 648. Zip code 59501 has a population of 12,638 as of the 2010 census.