What this means
The IEEE assigned the MA-L block 4C09D4 to Arcadyan Corporation. 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 4C:09:D4, it is Arcadyan Corporation hardware.
Frequently Asked Questions
Who owns MAC prefix 4C09D4?
4C09D4 is registered to Arcadyan Corporation 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. Arcadyan Corporation's block covers 16,777,216 addresses.
What devices use 4C09D4?
Any network device with a MAC address starting 4C:09:D4 was manufactured by or for Arcadyan Corporation.