Prefix overview
Phone numbers in prefix 512-403
This page covers the 512-403 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
512-403
RATE CENTER
AUSTIN
CARRIER
SOUTHWESTERN BELL
TX
Prefix range
The prefix 512-403 includes numbers from 5124030000 to 5124039999.
This range is associated with the AUSTIN rate center and was originally assigned to SOUTHWESTERN BELL.
Numbers in this prefix
20 numbers