Prefix overview
Phone numbers in prefix 640-237
This page covers the 640-237 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
640-237
RATE CENTER
MAYS LDG
CARRIER
ONVOY, LLC - NJ
NJ
Prefix range
The prefix 640-237 includes numbers from 6402370000 to 6402379999.
This range is associated with the MAYS LDG rate center and was originally assigned to ONVOY, LLC - NJ.
Numbers in this prefix
20 numbers