Prefix overview
Phone numbers in prefix 781-373
This page covers the 781-373 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
781-373
RATE CENTER
WALTHAM
CARRIER
COMCAST IP PHONE, LLC
MA
Prefix range
The prefix 781-373 includes numbers from 7813730000 to 7813739999.
This range is associated with the WALTHAM rate center and was originally assigned to COMCAST IP PHONE, LLC.
Numbers in this prefix
20 numbers