Prefix overview
Phone numbers in prefix 509-400
This page covers the 509-400 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
509-400
RATE CENTER
MATTAWA
CARRIER
UNITED STATES CELLULAR - WA
WA
Prefix range
The prefix 509-400 includes numbers from 5094000000 to 5094009999.
This range is associated with the MATTAWA rate center and was originally assigned to UNITED STATES CELLULAR - WA.
Numbers in this prefix
20 numbers