Prefix overview
Phone numbers in prefix 978-377
This page covers the 978-377 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
978-377
RATE CENTER
HAVERHILL
CARRIER
MCIMETRO ACCESS TRANSMISSION SERVICES LLC
MA
Prefix range
The prefix 978-377 includes numbers from 9783770000 to 9783779999.
This range is associated with the HAVERHILL rate center and was originally assigned to MCIMETRO ACCESS TRANSMISSION SERVICES LLC.
Numbers in this prefix
20 numbers