Prefix overview
Phone numbers in prefix 447-321
This page covers the 447-321 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
447-321
RATE CENTER
FAIRMOUNT
CARRIER
AT&T - LOCAL
IL
Prefix range
The prefix 447-321 includes numbers from 4473210000 to 4473219999.
This range is associated with the FAIRMOUNT rate center and was originally assigned to AT&T - LOCAL.
Numbers in this prefix
20 numbers