Prefix overview
Phone numbers in prefix 423-221
This page covers the 423-221 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
423-221
RATE CENTER
CHATTNOOGA
CARRIER
SPOK, INC.
TN
Prefix range
The prefix 423-221 includes numbers from 4232210000 to 4232219999.
This range is associated with the CHATTNOOGA rate center and was originally assigned to SPOK, INC..
Numbers in this prefix
20 numbers