What this means
The IEEE assigned the MA-L block 90DFB7 to s.m.s smart microwave sensors 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 90:DF:B7, it is s.m.s smart microwave sensors GmbH hardware.
Frequently Asked Questions
Who owns MAC prefix 90DFB7?
90DFB7 is registered to s.m.s smart microwave sensors 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. s.m.s smart microwave sensors GmbH's block covers 16,777,216 addresses.
What devices use 90DFB7?
Any network device with a MAC address starting 90:DF:B7 was manufactured by or for s.m.s smart microwave sensors GmbH.