Prefix overview
Phone numbers in prefix 423-435
This page covers the 423-435 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
423-435
RATE CENTER
ATHENS
CARRIER
LEVEL 3 COMMUNICATIONS, LLC - TN
TN
Prefix range
The prefix 423-435 includes numbers from 4234350000 to 4234359999.
This range is associated with the ATHENS rate center and was originally assigned to LEVEL 3 COMMUNICATIONS, LLC - TN.
Numbers in this prefix
20 numbers