Prefix overview
Phone numbers in prefix 636-255
This page covers the 636-255 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
636-255
RATE CENTER
ST CHARLES
CARRIER
SOUTHWESTERN BELL
MO
Prefix range
The prefix 636-255 includes numbers from 6362550000 to 6362559999.
This range is associated with the ST CHARLES rate center and was originally assigned to SOUTHWESTERN BELL.
Numbers in this prefix
20 numbers