Prefix overview
Phone numbers in prefix 660-511
This page covers the 660-511 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
660-511
RATE CENTER
XXXXXXXXXX
CARRIER
MULTIPLE OCN LISTING
MO
Prefix range
The prefix 660-511 includes numbers from 6605110000 to 6605119999.
This range is associated with the XXXXXXXXXX rate center and was originally assigned to MULTIPLE OCN LISTING.
Numbers in this prefix
20 numbers