NPA - 406 (Montana)
The 406 area code is part of geographic numbering plan area that includes Montana.
There are a few special area codes with the last two digits 422 match, these are known as easily recognizable codes (ERCs). The 8xx set of numbers are reserved for toll-free services and communication.
Montana is the 4th largest state, located to the west and defined by its diverse terrain ranging from the Rocky Mountains to the Great Plains. The economy is primarily based on agriculture, including ranching and cereal grain farming. Other significant economic resources include oil, gas, coal, hard rock mining and timber.
The western half of Montana contains numerous mountain ranges and the eastern half of Montana is characterized by western prairie lands. With an area of 380,800 square kilometers, Montana is slightly larger than Japan!
One of the most special and famous parks in the world for it's incredible geological properties. Marvel at a volcano’s hidden power rising up in colorful hot springs, mudpots, and geysers. Explore mountains, forests, and lakes to watch wildlife and witness the drama of the natural world unfold.See the Park in Action ->