Prefix overview
Phone numbers in prefix 435-623
This page covers the 435-623 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
435-623
RATE CENTER
NEPHI
CARRIER
QWEST CORPORATION
UT
Prefix range
The prefix 435-623 includes numbers from 4356230000 to 4356239999.
This range is associated with the NEPHI rate center and was originally assigned to QWEST CORPORATION.
Numbers in this prefix
20 numbers