Prefix overview
Phone numbers in prefix 406-277
This page covers the 406-277 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
406-277
RATE CENTER
BELT
CARRIER
3 RIVERS TEL. COOP., INC.
MT
Prefix range
The prefix 406-277 includes numbers from 4062770000 to 4062779999.
This range is associated with the BELT rate center and was originally assigned to 3 RIVERS TEL. COOP., INC..
Numbers in this prefix
20 numbers