About this number
(406) 634-0003 is a landline based telephone number operated by At&T Local and is located in the city of Helena, Montana and is in the West. It has a Number Planning Area (NPA - also known as an Area Code) of 406, a Network Numbering Exchange (NXX - also known as a prefix) of 634 and a subscriber number of 0003. It has an Operating Company Number (OCN) of 7421. A Common Language Location Identifier (CLLI) of HLNAMTMA4MD. As well as a Local access and transport area (LATA) of 648.