(406) 292
Prefix in JOPLIN, Montana
Prefix Details
About the (406) 292 Prefix
The (406) 292 prefix is assigned to TRIANGLE TEL. COOP. ASSN., INC. and serves the JOPLIN rate center in Montana. Phone numbers with this prefix are in the Mountain Time Zone and are part of area code 406 which covers Billings and surrounding areas.