What this means
The IEEE assigned the MA-L block 38B12D to Sonotronic Nagel 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 38:B1:2D, it is Sonotronic Nagel GmbH hardware.
Frequently Asked Questions
Who owns MAC prefix 38B12D?
38B12D is registered to Sonotronic Nagel 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. Sonotronic Nagel GmbH's block covers 16,777,216 addresses.
What devices use 38B12D?
Any network device with a MAC address starting 38:B1:2D was manufactured by or for Sonotronic Nagel GmbH.