Prefix overview
Phone numbers in prefix 231-204
This page covers the 231-204 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
231-204
RATE CENTER
FIFE LAKE
CARRIER
SPOK, INC.
MI
Prefix range
The prefix 231-204 includes numbers from 2312040000 to 2312049999.
This range is associated with the FIFE LAKE rate center and was originally assigned to SPOK, INC..
Numbers in this prefix
20 numbers