About this number
(406) 203 is a landline based telephone number operated by Level 3 Communications, LLC - and is located in zip code 59802 in the city of Missoula, Montana, which is in Missoula 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 203. It has an Operating Company Number (OCN) of 9415. A Common Language Location Identifier (CLLI) of MSSLMTMA0MD. As well as a Local access and transport area (LATA) of 648. Zip code 59802 has a population of 18,407 as of the 2010 census.