Prefix overview
Phone numbers in prefix 636-583
This page covers the 636-583 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
636-583
RATE CENTER
UNION
CARRIER
SOUTHWESTERN BELL
MO
Prefix range
The prefix 636-583 includes numbers from 6365830000 to 6365839999.
This range is associated with the UNION rate center and was originally assigned to SOUTHWESTERN BELL.
Numbers in this prefix
20 numbers