Prefix overview
Phone numbers in prefix 660-409
This page covers the 660-409 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
660-409
RATE CENTER
HOUSTONIA
CARRIER
ONVOY, LLC - MO
MO
Prefix range
The prefix 660-409 includes numbers from 6604090000 to 6604099999.
This range is associated with the HOUSTONIA rate center and was originally assigned to ONVOY, LLC - MO.
Numbers in this prefix
20 numbers