Prefix overview
Phone numbers in prefix 986-640
This page covers the 986-640 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
986-640
RATE CENTER
WARM LAKE
CARRIER
MIDVALE TELEPHONE EXCHANGE, INC.
ID
Prefix range
The prefix 986-640 includes numbers from 9866400000 to 9866409999.
This range is associated with the WARM LAKE rate center and was originally assigned to MIDVALE TELEPHONE EXCHANGE, INC..
Numbers in this prefix
20 numbers