Prefix overview
Phone numbers in prefix 959-666
This page covers the 959-666 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
959-666
RATE CENTER
HARTFORD
CARRIER
ONVOY, LLC - CT
CT
Prefix range
The prefix 959-666 includes numbers from 9596660000 to 9596669999.
This range is associated with the HARTFORD rate center and was originally assigned to ONVOY, LLC - CT.
Numbers in this prefix
20 numbers