Prefix overview
Phone numbers in prefix 774-374
This page covers the 774-374 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
774-374
RATE CENTER
MARLBORO
CARRIER
LEVEL 3 COMMUNICATIONS, LLC - MA
MA
Prefix range
The prefix 774-374 includes numbers from 7743740000 to 7743749999.
This range is associated with the MARLBORO rate center and was originally assigned to LEVEL 3 COMMUNICATIONS, LLC - MA.
Numbers in this prefix
20 numbers