What this means
The IEEE assigned the MA-L block 00909E to Critical IO, LLC. 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 00:90:9E, it is Critical IO, LLC hardware.
Frequently Asked Questions
Who owns MAC prefix 00909E?
00909E is registered to Critical IO, LLC 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. Critical IO, LLC's block covers 16,777,216 addresses.
What devices use 00909E?
Any network device with a MAC address starting 00:90:9E was manufactured by or for Critical IO, LLC.