Prefix overview
Phone numbers in prefix 857-407
This page covers the 857-407 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
857-407
RATE CENTER
ROXBURY
CARRIER
NEW CINGULAR WIRELESS PCS, LLC - DC
MA
Prefix range
The prefix 857-407 includes numbers from 8574070000 to 8574079999.
This range is associated with the ROXBURY rate center and was originally assigned to NEW CINGULAR WIRELESS PCS, LLC - DC.
Numbers in this prefix
20 numbers