Prefix overview
Phone numbers in prefix 231-391
This page covers the 231-391 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
231-391
RATE CENTER
WALLOON LK
CARRIER
BANDWIDTH.COM CLEC, LLC - MI
MI
Prefix range
The prefix 231-391 includes numbers from 2313910000 to 2313919999.
This range is associated with the WALLOON LK rate center and was originally assigned to BANDWIDTH.COM CLEC, LLC - MI.
Numbers in this prefix
20 numbers