Prefix overview
Phone numbers in prefix 667-389
This page covers the 667-389 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
667-389
RATE CENTER
CAMBRIDGE
CARRIER
COMMIO, LLC
MD
Prefix range
The prefix 667-389 includes numbers from 6673890000 to 6673899999.
This range is associated with the CAMBRIDGE rate center and was originally assigned to COMMIO, LLC.
Numbers in this prefix
20 numbers