Prefix overview
Phone numbers in prefix 820-400
This page covers the 820-400 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
820-400
RATE CENTER
PARKFIELD
CARRIER
TWILIO INTERNATIONAL, INC.
CA
Prefix range
The prefix 820-400 includes numbers from 8204000000 to 8204009999.
This range is associated with the PARKFIELD rate center and was originally assigned to TWILIO INTERNATIONAL, INC..
Numbers in this prefix
20 numbers