Prefix overview
Phone numbers in prefix 517-522
This page covers the 517-522 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
517-522
RATE CENTER
GRASS LAKE
CARRIER
FRONTIER NORTH, INC. - MI
MI
Prefix range
The prefix 517-522 includes numbers from 5175220000 to 5175229999.
This range is associated with the GRASS LAKE rate center and was originally assigned to FRONTIER NORTH, INC. - MI.
Numbers in this prefix
20 numbers