Prefix overview
Phone numbers in prefix 773-321
This page covers the 773-321 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
773-321
RATE CENTER
CHICGOZN06
CARRIER
LEVEL 3 COMMUNICATIONS, LLC - IL
IL
Prefix range
The prefix 773-321 includes numbers from 7733210000 to 7733219999.
This range is associated with the CHICGOZN06 rate center and was originally assigned to LEVEL 3 COMMUNICATIONS, LLC - IL.
Numbers in this prefix
20 numbers