Prefix overview
Phone numbers in prefix 573-439
This page covers the 573-439 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
573-439
RATE CENTER
PHILA
CARRIER
MARK TWAIN RURAL TEL. CO.
MO
Prefix range
The prefix 573-439 includes numbers from 5734390000 to 5734399999.
This range is associated with the PHILA rate center and was originally assigned to MARK TWAIN RURAL TEL. CO..
Numbers in this prefix
20 numbers