Prefix overview
Phone numbers in prefix 320-379
This page covers the 320-379 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
320-379
RATE CENTER
GRANITEFLS
CARRIER
MCC TELEPHONY OF MINNESOTA, LLC - MN
MN
Prefix range
The prefix 320-379 includes numbers from 3203790000 to 3203799999.
This range is associated with the GRANITEFLS rate center and was originally assigned to MCC TELEPHONY OF MINNESOTA, LLC - MN.
Numbers in this prefix
20 numbers