Prefix overview
Phone numbers in prefix 667-303
This page covers the 667-303 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
667-303
RATE CENTER
BALTIMORE
CARRIER
NUSO, LLC
MD
Prefix range
The prefix 667-303 includes numbers from 6673030000 to 6673039999.
This range is associated with the BALTIMORE rate center and was originally assigned to NUSO, LLC.
Numbers in this prefix
20 numbers