Prefix overview
Phone numbers in prefix 520-476
This page covers the 520-476 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
520-476
RATE CENTER
TUCSON
CARRIER
NUSO, LLC
AZ
Prefix range
The prefix 520-476 includes numbers from 5204760000 to 5204769999.
This range is associated with the TUCSON rate center and was originally assigned to NUSO, LLC.
Numbers in this prefix
20 numbers