Prefix overview
Phone numbers in prefix 406-231
This page covers the 406-231 prefix in the United States. It shows where numbers come from, which carrier is linked to the range, and how this block is structured.
If you are looking for a specific number, you can continue to its dedicated phone page. Otherwise, this page helps you understand the broader number block behind it.
PREFIX
406-231
RATE CENTER
GREATFALLS
CARRIER
NEW CINGULAR WIRELESS PCS, LLC
MT
Prefix range
The prefix 406-231 includes numbers from 4062310000 to 4062319999.
This range is associated with the GREATFALLS rate center and was originally assigned to NEW CINGULAR WIRELESS PCS, LLC.
Numbers in this prefix
20 numbers