Prefix overview
Phone numbers in prefix 821-864
This page covers the 821-864 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
821-864
RATE CENTER
JOANNA
CARRIER
ONVOY SPECTRUM, LLC
SC
Prefix range
The prefix 821-864 includes numbers from 8218640000 to 8218649999.
This range is associated with the JOANNA rate center and was originally assigned to ONVOY SPECTRUM, LLC.
Numbers in this prefix
20 numbers