Prefix overview
Phone numbers in prefix 720-321
This page covers the 720-321 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
720-321
RATE CENTER
DENVER
CARRIER
QWEST CORPORATION
CO
Prefix range
The prefix 720-321 includes numbers from 7203210000 to 7203219999.
This range is associated with the DENVER rate center and was originally assigned to QWEST CORPORATION.
Numbers in this prefix
20 numbers