Prefix overview
Phone numbers in prefix 320-356
This page covers the 320-356 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
320-356
RATE CENTER
AVON
CARRIER
QWEST CORPORATION
MN
Prefix range
The prefix 320-356 includes numbers from 3203560000 to 3203569999.
This range is associated with the AVON rate center and was originally assigned to QWEST CORPORATION.
Numbers in this prefix
20 numbers