Prefix overview
Phone numbers in prefix 857-310
This page covers the 857-310 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
857-310
RATE CENTER
BOSTON
CARRIER
OMNIPOINT MIAMI E LICENSE, LLC
MA
Prefix range
The prefix 857-310 includes numbers from 8573100000 to 8573109999.
This range is associated with the BOSTON rate center and was originally assigned to OMNIPOINT MIAMI E LICENSE, LLC.
Numbers in this prefix
20 numbers