What this means
The IEEE assigned the MA-L block 0040AD to SMA REGELSYSTEME 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 00:40:AD, it is SMA REGELSYSTEME GMBH hardware.
Frequently Asked Questions
Who owns MAC prefix 0040AD?
0040AD is registered to SMA REGELSYSTEME 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. SMA REGELSYSTEME GMBH's block covers 16,777,216 addresses.
What devices use 0040AD?
Any network device with a MAC address starting 00:40:AD was manufactured by or for SMA REGELSYSTEME GMBH.