Prefix overview
Phone numbers in prefix 573-431
This page covers the 573-431 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
573-431
RATE CENTER
FLAT RIVER
CARRIER
SOUTHWESTERN BELL
MO
Prefix range
The prefix 573-431 includes numbers from 5734310000 to 5734319999.
This range is associated with the FLAT RIVER rate center and was originally assigned to SOUTHWESTERN BELL.
Numbers in this prefix
20 numbers