Prefix overview
Phone numbers in prefix 231-290
This page covers the 231-290 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
231-290
RATE CENTER
INDIAN RIV
CARRIER
NEW CINGULAR WIRELESS PCS, LLC - IL
MI
Prefix range
The prefix 231-290 includes numbers from 2312900000 to 2312909999.
This range is associated with the INDIAN RIV rate center and was originally assigned to NEW CINGULAR WIRELESS PCS, LLC - IL.
Numbers in this prefix
20 numbers