Prefix overview
Phone numbers in prefix 423-291
This page covers the 423-291 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
423-291
RATE CENTER
MOUNTAINCY
CARRIER
SUNCOM DBA T-MOBILE USA
TN
Prefix range
The prefix 423-291 includes numbers from 4232910000 to 4232919999.
This range is associated with the MOUNTAINCY rate center and was originally assigned to SUNCOM DBA T-MOBILE USA.
Numbers in this prefix
20 numbers