Prefix overview
Phone numbers in prefix 406-355
This page covers the 406-355 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
406-355
RATE CENTER
RUDYARD
CARRIER
TRIANGLE TEL. COOP. ASSN., INC.
MT
Prefix range
The prefix 406-355 includes numbers from 4063550000 to 4063559999.
This range is associated with the RUDYARD rate center and was originally assigned to TRIANGLE TEL. COOP. ASSN., INC..
Numbers in this prefix
20 numbers