Who owns MAC prefix 0000CD?

0000CD is registered to Allied Telesis Labs Ltd in the IEEE MA-L registry.

What devices use 0000CD?

Any network device with a MAC address starting 00:00:CD was manufactured by or for Allied Telesis Labs Ltd.

MA-L · OUI prefix

Allied Telesis Labs Ltd

Any MAC address starting 00:00:CD is registered to Allied Telesis Labs Ltd in NZ.

OUI prefix	0000CD
Vendor	Allied Telesis Labs Ltd
Registry	MA-L (24-bit, large block)
Country	NZ
Example MAC	00:00:CD:00:00:00

What this means

The IEEE assigned the MA-L block 0000CD to Allied Telesis Labs Ltd. 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 00:00:CD, it is Allied Telesis Labs Ltd hardware.

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