Prefix overview
Phone numbers in prefix 231-200
This page covers the 231-200 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
231-200
RATE CENTER
Unknown rate center
CARRIER
Unknown carrier
MI
Prefix range
The prefix 231-200 includes numbers from 2312000000 to 2312009999.
This range is associated with the Unknown rate center rate center and was originally assigned to Unknown carrier.
Numbers in this prefix
20 numbers