What this means
The IEEE assigned the MA-L block 74F85D to Berkeley Nucleonics Corp. 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:F8:5D, it is Berkeley Nucleonics Corp hardware.
Frequently Asked Questions
Who owns MAC prefix 74F85D?
74F85D is registered to Berkeley Nucleonics Corp 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. Berkeley Nucleonics Corp's block covers 16,777,216 addresses.
What devices use 74F85D?
Any network device with a MAC address starting 74:F8:5D was manufactured by or for Berkeley Nucleonics Corp.