Prefix overview
Phone numbers in prefix 660-404
This page covers the 660-404 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
660-404
RATE CENTER
LEONARD
CARRIER
NEW CINGULAR WIRELESS PCS, LLC - IL
MO
Prefix range
The prefix 660-404 includes numbers from 6604040000 to 6604049999.
This range is associated with the LEONARD rate center and was originally assigned to NEW CINGULAR WIRELESS PCS, LLC - IL.
Numbers in this prefix
20 numbers