Prefix overview
Phone numbers in prefix 620-399
This page covers the 620-399 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
620-399
RATE CENTER
WELLINGTON
CARRIER
SOUTHWESTERN BELL
KS
Prefix range
The prefix 620-399 includes numbers from 6203990000 to 6203999999.
This range is associated with the WELLINGTON rate center and was originally assigned to SOUTHWESTERN BELL.
Numbers in this prefix
20 numbers