Prefix overview
Phone numbers in prefix 317-421
This page covers the 317-421 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
317-421
RATE CENTER
SHELBYVL
CARRIER
INDIANA BELL TEL CO INC
IN
Prefix range
The prefix 317-421 includes numbers from 3174210000 to 3174219999.
This range is associated with the SHELBYVL rate center and was originally assigned to INDIANA BELL TEL CO INC.
Numbers in this prefix
20 numbers