Prefix overview
Phone numbers in prefix 517-423
This page covers the 517-423 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
517-423
RATE CENTER
TECUMSEH
CARRIER
FRONTIER NORTH, INC. - MI
MI
Prefix range
The prefix 517-423 includes numbers from 5174230000 to 5174239999.
This range is associated with the TECUMSEH rate center and was originally assigned to FRONTIER NORTH, INC. - MI.
Numbers in this prefix
20 numbers