What this means
The IEEE assigned the MA-L block 001E7F to CBM of America. Every network interface they manufacture under this block has a MAC address beginning with these digits, followed by a unique per-device identifier. If a device on your network shows a MAC starting 00:1E:7F, it is CBM of America hardware.
Frequently Asked Questions
Who owns MAC prefix 001E7F?
001E7F is registered to CBM of America in the IEEE MA-L registry.
What does the MA-L registry type mean?
An MA-L assignment, the IEEE's original OUI format, gives the vendor the first three octets and 16,777,216 device addresses under them. CBM of America's block covers 16,777,216 addresses.
What devices use 001E7F?
Any network device with a MAC address starting 00:1E:7F was manufactured by or for CBM of America.