Prefix overview
Phone numbers in prefix 821-333
This page covers the 821-333 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
821-333
RATE CENTER
SPARTANBG
CARRIER
ONVOY, LLC - SC
SC
Prefix range
The prefix 821-333 includes numbers from 8213330000 to 8213339999.
This range is associated with the SPARTANBG rate center and was originally assigned to ONVOY, LLC - SC.
Numbers in this prefix
20 numbers