Prefix overview
Phone numbers in prefix 231-306
This page covers the 231-306 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
231-306
RATE CENTER
CADILLAC
CARRIER
TELNET WORLDWIDE, INC.
MI
Prefix range
The prefix 231-306 includes numbers from 2313060000 to 2313069999.
This range is associated with the CADILLAC rate center and was originally assigned to TELNET WORLDWIDE, INC..
Numbers in this prefix
20 numbers