Prefix overview
Phone numbers in prefix 909-378
This page covers the 909-378 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
909-378
RATE CENTER
DIAMONDBAR
CARRIER
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA
CA
Prefix range
The prefix 909-378 includes numbers from 9093780000 to 9093789999.
This range is associated with the DIAMONDBAR rate center and was originally assigned to MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA.
Numbers in this prefix
20 numbers