Prefix overview
Phone numbers in prefix 435-633
This page covers the 435-633 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
435-633
RATE CENTER
RICHFIELD
CARRIER
LEVEL 3 COMMUNICATIONS, LLC - UT
UT
Prefix range
The prefix 435-633 includes numbers from 4356330000 to 4356339999.
This range is associated with the RICHFIELD rate center and was originally assigned to LEVEL 3 COMMUNICATIONS, LLC - UT.
Numbers in this prefix
20 numbers