What this means
The IEEE assigned the MA-L block 0090F4 to LIGHTNING INSTRUMENTATION. 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 00:90:F4, it is LIGHTNING INSTRUMENTATION hardware.
Frequently Asked Questions
Who owns MAC prefix 0090F4?
0090F4 is registered to LIGHTNING INSTRUMENTATION 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. LIGHTNING INSTRUMENTATION's block covers 16,777,216 addresses.
What devices use 0090F4?
Any network device with a MAC address starting 00:90:F4 was manufactured by or for LIGHTNING INSTRUMENTATION.