Prefix overview
Phone numbers in prefix 605-256
This page covers the 605-256 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
605-256
RATE CENTER
MADISON
CARRIER
QWEST CORPORATION
SD
Prefix range
The prefix 605-256 includes numbers from 6052560000 to 6052569999.
This range is associated with the MADISON rate center and was originally assigned to QWEST CORPORATION.
Numbers in this prefix
20 numbers