Prefix overview
Phone numbers in prefix 504-399
This page covers the 504-399 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
504-399
RATE CENTER
NEWORLEANS
CARRIER
ONVOY, LLC - LA
LA
Prefix range
The prefix 504-399 includes numbers from 5043990000 to 5043999999.
This range is associated with the NEWORLEANS rate center and was originally assigned to ONVOY, LLC - LA.
Numbers in this prefix
20 numbers