Prefix overview
Phone numbers in prefix 503-300
This page covers the 503-300 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
503-300
RATE CENTER
BAY CITY
CARRIER
CHARTER IP ENABLED SERVICES, LLC
OR
Prefix range
The prefix 503-300 includes numbers from 5033000000 to 5033009999.
This range is associated with the BAY CITY rate center and was originally assigned to CHARTER IP ENABLED SERVICES, LLC.
Numbers in this prefix
20 numbers