What this means
The IEEE assigned the MA-L block 00223C to RATIO Entwicklungen GmbH. 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 00:22:3C, it is RATIO Entwicklungen GmbH hardware.
Frequently Asked Questions
Who owns MAC prefix 00223C?
00223C is registered to RATIO Entwicklungen GmbH 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. RATIO Entwicklungen GmbH's block covers 16,777,216 addresses.
What devices use 00223C?
Any network device with a MAC address starting 00:22:3C was manufactured by or for RATIO Entwicklungen GmbH.