Prefix overview
Phone numbers in prefix 928-397
This page covers the 928-397 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
928-397
RATE CENTER
CASTLEROCK
CARRIER
ONVOY, LLC - AZ
AZ
Prefix range
The prefix 928-397 includes numbers from 9283970000 to 9283979999.
This range is associated with the CASTLEROCK rate center and was originally assigned to ONVOY, LLC - AZ.
Numbers in this prefix
20 numbers