Prefix overview
Phone numbers in prefix 350-203
This page covers the 350-203 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
350-203
RATE CENTER
DOS PALOS
CARRIER
COMMIO, LLC
CA
Prefix range
The prefix 350-203 includes numbers from 3502030000 to 3502039999.
This range is associated with the DOS PALOS rate center and was originally assigned to COMMIO, LLC.
Numbers in this prefix
20 numbers