Prefix overview
Phone numbers in prefix 641-257
This page covers the 641-257 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
641-257
RATE CENTER
CHARLES CY
CARRIER
QWEST CORPORATION
IA
Prefix range
The prefix 641-257 includes numbers from 6412570000 to 6412579999.
This range is associated with the CHARLES CY rate center and was originally assigned to QWEST CORPORATION.
Numbers in this prefix
20 numbers