What this means
The IEEE assigned the MA-L block 68B983 to b-plus GmbH. 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 68:B9:83, it is b-plus GmbH hardware.
Frequently Asked Questions
Who owns MAC prefix 68B983?
68B983 is registered to b-plus GmbH 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. b-plus GmbH's block covers 16,777,216 addresses.
What devices use 68B983?
Any network device with a MAC address starting 68:B9:83 was manufactured by or for b-plus GmbH.