What this means
The IEEE assigned the MA-L block 00D042 to MAHLO GMBH & CO. UG. 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:D0:42, it is MAHLO GMBH & CO. UG hardware.
Frequently Asked Questions
Who owns MAC prefix 00D042?
00D042 is registered to MAHLO GMBH & CO. UG 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. MAHLO GMBH & CO. UG's block covers 16,777,216 addresses.
What devices use 00D042?
Any network device with a MAC address starting 00:D0:42 was manufactured by or for MAHLO GMBH & CO. UG.