Prefix overview
Phone numbers in prefix 641-338
This page covers the 641-338 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
641-338
RATE CENTER
THAYER
CARRIER
GRAND RIVER MUTUAL TEL CO
IA
Prefix range
The prefix 641-338 includes numbers from 6413380000 to 6413389999.
This range is associated with the THAYER rate center and was originally assigned to GRAND RIVER MUTUAL TEL CO.
Numbers in this prefix
20 numbers