Prefix overview
Phone numbers in prefix 406-456
This page covers the 406-456 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
406-456
RATE CENTER
SO CHESTER
CARRIER
TRIANGLE TEL. COOP. ASSN., INC.
MT
Prefix range
The prefix 406-456 includes numbers from 4064560000 to 4064569999.
This range is associated with the SO CHESTER rate center and was originally assigned to TRIANGLE TEL. COOP. ASSN., INC..
Numbers in this prefix
20 numbers