Prefix overview
Phone numbers in prefix 605-404
This page covers the 605-404 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
605-404
RATE CENTER
SIOUX FLS
CARRIER
QWEST CORPORATION
SD
Prefix range
The prefix 605-404 includes numbers from 6054040000 to 6054049999.
This range is associated with the SIOUX FLS rate center and was originally assigned to QWEST CORPORATION.
Numbers in this prefix
20 numbers