Prefix overview
Phone numbers in prefix 872-321
This page covers the 872-321 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
872-321
RATE CENTER
CHICGOZN05
CARRIER
ONVOY SPECTRUM, LLC
IL
Prefix range
The prefix 872-321 includes numbers from 8723210000 to 8723219999.
This range is associated with the CHICGOZN05 rate center and was originally assigned to ONVOY SPECTRUM, LLC.
Numbers in this prefix
20 numbers