Prefix overview
Phone numbers in prefix 423-439
This page covers the 423-439 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
423-439
RATE CENTER
JOHNSON CY
CARRIER
UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN
TN
Prefix range
The prefix 423-439 includes numbers from 4234390000 to 4234399999.
This range is associated with the JOHNSON CY rate center and was originally assigned to UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN.
Numbers in this prefix
20 numbers