Prefix overview
Phone numbers in prefix 605-403
This page covers the 605-403 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
605-403
RATE CENTER
SIOUX FLS
CARRIER
CSC WIRELESS, LLC
SD
Prefix range
The prefix 605-403 includes numbers from 6054030000 to 6054039999.
This range is associated with the SIOUX FLS rate center and was originally assigned to CSC WIRELESS, LLC.
Numbers in this prefix
20 numbers