Who owns MAC prefix 000433?

000433 is registered to Cyberboard A/S in the IEEE MA-L registry.

What devices use 000433?

Any network device with a MAC address starting 00:04:33 was manufactured by or for Cyberboard A/S.

MA-L · OUI prefix

Cyberboard A/S

Any MAC address starting 00:04:33 is registered to Cyberboard A/S in DK.

OUI prefix	000433
Vendor	Cyberboard A/S
Registry	MA-L (24-bit, large block)
Country	DK
Example MAC	00:04:33:00:00:00

What this means

The IEEE assigned the MA-L block 000433 to Cyberboard A/S. 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 00:04:33, it is Cyberboard A/S hardware.

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