What this means
The IEEE assigned the MA-L block D0F73B to Helmut Mauell GmbH Werk Weida. 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 D0:F7:3B, it is Helmut Mauell GmbH Werk Weida hardware.
Frequently Asked Questions
Who owns MAC prefix D0F73B?
D0F73B is registered to Helmut Mauell GmbH Werk Weida 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. Helmut Mauell GmbH Werk Weida's block covers 16,777,216 addresses.
What devices use D0F73B?
Any network device with a MAC address starting D0:F7:3B was manufactured by or for Helmut Mauell GmbH Werk Weida.