Prefix overview
Phone numbers in prefix 443-310
This page covers the 443-310 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
443-310
RATE CENTER
BALTIMORE
CARRIER
NEW CINGULAR WIRELESS PCS, LLC - DC
MD
Prefix range
The prefix 443-310 includes numbers from 4433100000 to 4433109999.
This range is associated with the BALTIMORE rate center and was originally assigned to NEW CINGULAR WIRELESS PCS, LLC - DC.
Numbers in this prefix
20 numbers