Prefix overview
Phone numbers in prefix 840-555
This page covers the 840-555 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
840-555
RATE CENTER
DIR ASST
CARRIER
MULTIPLE OCN LISTING
CA
Prefix range
The prefix 840-555 includes numbers from 8405550000 to 8405559999.
This range is associated with the DIR ASST rate center and was originally assigned to MULTIPLE OCN LISTING.
Numbers in this prefix
20 numbers