Prefix overview
Phone numbers in prefix 504-203
This page covers the 504-203 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
504-203
RATE CENTER
NEWORLEANS
CARRIER
ONVOY SPECTRUM, LLC
LA
Prefix range
The prefix 504-203 includes numbers from 5042030000 to 5042039999.
This range is associated with the NEWORLEANS rate center and was originally assigned to ONVOY SPECTRUM, LLC.
Numbers in this prefix
20 numbers