Prefix overview
Phone numbers in prefix 350-503
This page covers the 350-503 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
350-503
RATE CENTER
MERCED
CARRIER
ONVOY SPECTRUM, LLC
CA
Prefix range
The prefix 350-503 includes numbers from 3505030000 to 3505039999.
This range is associated with the MERCED rate center and was originally assigned to ONVOY SPECTRUM, LLC.
Numbers in this prefix
20 numbers