Prefix overview
Phone numbers in prefix 840-288
This page covers the 840-288 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
840-288
RATE CENTER
S BERNDINO
CARRIER
MCIMETRO ACCESS TRANSMISSION SERVICES LLC
CA
Prefix range
The prefix 840-288 includes numbers from 8402880000 to 8402889999.
This range is associated with the S BERNDINO rate center and was originally assigned to MCIMETRO ACCESS TRANSMISSION SERVICES LLC.
Numbers in this prefix
20 numbers