What this means
The IEEE assigned the MA-L block 748F1B to MasterImage 3D. 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 74:8F:1B, it is MasterImage 3D hardware.
Frequently Asked Questions
Who owns MAC prefix 748F1B?
748F1B is registered to MasterImage 3D 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. MasterImage 3D's block covers 16,777,216 addresses.
What devices use 748F1B?
Any network device with a MAC address starting 74:8F:1B was manufactured by or for MasterImage 3D.