Prefix overview
Phone numbers in prefix 857-445
This page covers the 857-445 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
857-445
RATE CENTER
BOSTON
CARRIER
NEW CINGULAR WIRELESS PCS, LLC - DC
MA
Prefix range
The prefix 857-445 includes numbers from 8574450000 to 8574459999.
This range is associated with the BOSTON rate center and was originally assigned to NEW CINGULAR WIRELESS PCS, LLC - DC.
Numbers in this prefix
20 numbers