Prefix overview
Phone numbers in prefix 641-503
This page covers the 641-503 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
641-503
RATE CENTER
MOUNT AYR
CARRIER
ONVOY, LLC - IA
IA
Prefix range
The prefix 641-503 includes numbers from 6415030000 to 6415039999.
This range is associated with the MOUNT AYR rate center and was originally assigned to ONVOY, LLC - IA.
Numbers in this prefix
20 numbers