Prefix overview
Phone numbers in prefix 857-412
This page covers the 857-412 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
857-412
RATE CENTER
CAMBRIDGE
CARRIER
ONVOY, LLC - MA
MA
Prefix range
The prefix 857-412 includes numbers from 8574120000 to 8574129999.
This range is associated with the CAMBRIDGE rate center and was originally assigned to ONVOY, LLC - MA.
Numbers in this prefix
20 numbers