Prefix overview
Phone numbers in prefix 331-529
This page covers the 331-529 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
331-529
RATE CENTER
NAPERVILLE
CARRIER
FRACTEL, LLC
IL
Prefix range
The prefix 331-529 includes numbers from 3315290000 to 3315299999.
This range is associated with the NAPERVILLE rate center and was originally assigned to FRACTEL, LLC.
Numbers in this prefix
20 numbers