Prefix overview
Phone numbers in prefix 781-421
This page covers the 781-421 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
781-421
RATE CENTER
ROCKLAND
CARRIER
IP HORIZON LLC
MA
Prefix range
The prefix 781-421 includes numbers from 7814210000 to 7814219999.
This range is associated with the ROCKLAND rate center and was originally assigned to IP HORIZON LLC.
Numbers in this prefix
20 numbers