Prefix overview
Phone numbers in prefix 406-343
This page covers the 406-343 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
406-343
RATE CENTER
WYOLA
CARRIER
PROJECT TEL. CO., INC.
MT
Prefix range
The prefix 406-343 includes numbers from 4063430000 to 4063439999.
This range is associated with the WYOLA rate center and was originally assigned to PROJECT TEL. CO., INC..
Numbers in this prefix
20 numbers