Prefix overview
Phone numbers in prefix 605-255
This page covers the 605-255 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
605-255
RATE CENTER
HERMOSA
CARRIER
FORT RANDALL TELCO DBA MT RUSHMORE TELEPHONE CO
SD
Prefix range
The prefix 605-255 includes numbers from 6052550000 to 6052559999.
This range is associated with the HERMOSA rate center and was originally assigned to FORT RANDALL TELCO DBA MT RUSHMORE TELEPHONE CO.
Numbers in this prefix
20 numbers