Prefix overview
Phone numbers in prefix 320-400
This page covers the 320-400 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
320-400
RATE CENTER
OLIVIA
CARRIER
NEW CINGULAR WIRELESS PCS, LLC - IL
MN
Prefix range
The prefix 320-400 includes numbers from 3204000000 to 3204009999.
This range is associated with the OLIVIA rate center and was originally assigned to NEW CINGULAR WIRELESS PCS, LLC - IL.
Numbers in this prefix
20 numbers