Prefix overview
Phone numbers in prefix 817-399
This page covers the 817-399 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
817-399
RATE CENTER
EULESS
CARRIER
SOUTHWESTERN BELL
TX
Prefix range
The prefix 817-399 includes numbers from 8173990000 to 8173999999.
This range is associated with the EULESS rate center and was originally assigned to SOUTHWESTERN BELL.
Numbers in this prefix
20 numbers