Prefix overview
Phone numbers in prefix 350-500
This page covers the 350-500 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
350-500
RATE CENTER
ATWATER
CARRIER
ONVOY SPECTRUM, LLC
CA
Prefix range
The prefix 350-500 includes numbers from 3505000000 to 3505009999.
This range is associated with the ATWATER rate center and was originally assigned to ONVOY SPECTRUM, LLC.
Numbers in this prefix
20 numbers