Prefix overview
Phone numbers in prefix 231-317
This page covers the 231-317 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
231-317
RATE CENTER
BOYNE CITY
CARRIER
SPOK, INC.
MI
Prefix range
The prefix 231-317 includes numbers from 2313170000 to 2313179999.
This range is associated with the BOYNE CITY rate center and was originally assigned to SPOK, INC..
Numbers in this prefix
20 numbers