What this means
The IEEE assigned the MA-L block 000B41 to Ing. Büro Dr. Beutlhauser. 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 00:0B:41, it is Ing. Büro Dr. Beutlhauser hardware.
Frequently Asked Questions
Who owns MAC prefix 000B41?
000B41 is registered to Ing. Büro Dr. Beutlhauser 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. Ing. Büro Dr. Beutlhauser's block covers 16,777,216 addresses.
What devices use 000B41?
Any network device with a MAC address starting 00:0B:41 was manufactured by or for Ing. Büro Dr. Beutlhauser.