Prefix overview
Phone numbers in prefix 640-344
This page covers the 640-344 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
640-344
RATE CENTER
FORT DIX
CARRIER
ONVOY SPECTRUM, LLC
NJ
Prefix range
The prefix 640-344 includes numbers from 6403440000 to 6403449999.
This range is associated with the FORT DIX rate center and was originally assigned to ONVOY SPECTRUM, LLC.
Numbers in this prefix
20 numbers