Prefix overview
Phone numbers in prefix 231-397
This page covers the 231-397 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
231-397
RATE CENTER
MANISTEE
CARRIER
OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC
MI
Prefix range
The prefix 231-397 includes numbers from 2313970000 to 2313979999.
This range is associated with the MANISTEE rate center and was originally assigned to OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC.
Numbers in this prefix
20 numbers