Prefix overview
Phone numbers in prefix 947-521
This page covers the 947-521 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
947-521
RATE CENTER
ROYAL OAK
CARRIER
TELEPORT COMMUNICATIONS AMERICA, LLC - MI
MI
Prefix range
The prefix 947-521 includes numbers from 9475210000 to 9475219999.
This range is associated with the ROYAL OAK rate center and was originally assigned to TELEPORT COMMUNICATIONS AMERICA, LLC - MI.
Numbers in this prefix
20 numbers