Prefix overview
Phone numbers in prefix 636-543
This page covers the 636-543 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
636-543
RATE CENTER
FSSCRSTLCY
CARRIER
TELEPORT COMMUNICATIONS AMERICA, LLC - MO
MO
Prefix range
The prefix 636-543 includes numbers from 6365430000 to 6365439999.
This range is associated with the FSSCRSTLCY rate center and was originally assigned to TELEPORT COMMUNICATIONS AMERICA, LLC - MO.
Numbers in this prefix
20 numbers