Prefix overview
Phone numbers in prefix 231-315
This page covers the 231-315 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
231-315
RATE CENTER
MUSKEGON
CARRIER
SPOK, INC.
MI
Prefix range
The prefix 231-315 includes numbers from 2313150000 to 2313159999.
This range is associated with the MUSKEGON rate center and was originally assigned to SPOK, INC..
Numbers in this prefix
20 numbers