Prefix overview
Phone numbers in prefix 971-399
This page covers the 971-399 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
971-399
RATE CENTER
FALLS CITY
CARRIER
INVOXIO INCORPORATED
OR
Prefix range
The prefix 971-399 includes numbers from 9713990000 to 9713999999.
This range is associated with the FALLS CITY rate center and was originally assigned to INVOXIO INCORPORATED.
Numbers in this prefix
20 numbers