Prefix overview
Phone numbers in prefix 978-366
This page covers the 978-366 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
978-366
RATE CENTER
SUDBURY
CARRIER
AMERICAN MESSAGING SERVICES, LLC
MA
Prefix range
The prefix 978-366 includes numbers from 9783660000 to 9783669999.
This range is associated with the SUDBURY rate center and was originally assigned to AMERICAN MESSAGING SERVICES, LLC.
Numbers in this prefix
20 numbers