Prefix overview
Phone numbers in prefix 509-203
This page covers the 509-203 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
509-203
RATE CENTER
GRANDVIEW
CARRIER
LEVEL 3 COMMUNICATIONS, LLC - WA
WA
Prefix range
The prefix 509-203 includes numbers from 5092030000 to 5092039999.
This range is associated with the GRANDVIEW rate center and was originally assigned to LEVEL 3 COMMUNICATIONS, LLC - WA.
Numbers in this prefix
20 numbers