Prefix overview
Phone numbers in prefix 720-457
This page covers the 720-457 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
720-457
RATE CENTER
DENVER
CARRIER
LEVEL 3 COMMUNICATIONS, LLC - CO
CO
Prefix range
The prefix 720-457 includes numbers from 7204570000 to 7204579999.
This range is associated with the DENVER rate center and was originally assigned to LEVEL 3 COMMUNICATIONS, LLC - CO.
Numbers in this prefix
20 numbers