Prefix overview
Phone numbers in prefix 406-418
This page covers the 406-418 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
406-418
RATE CENTER
COOKE CITY
CARRIER
ONVOY, LLC - MT
MT
Prefix range
The prefix 406-418 includes numbers from 4064180000 to 4064189999.
This range is associated with the COOKE CITY rate center and was originally assigned to ONVOY, LLC - MT.
Numbers in this prefix
20 numbers