Who owns MAC prefix DC309C?

DC309C is registered to Heyrex Limited in the IEEE MA-L registry.

What devices use DC309C?

Any network device with a MAC address starting DC:30:9C was manufactured by or for Heyrex Limited.

MA-L · OUI prefix

Heyrex Limited

Any MAC address starting DC:30:9C is registered to Heyrex Limited in NZ.

OUI prefix	DC309C
Vendor	Heyrex Limited
Registry	MA-L (24-bit, large block)
Country	NZ
Example MAC	DC:30:9C:00:00:00

What this means

The IEEE assigned the MA-L block DC309C to Heyrex Limited. 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 DC:30:9C, it is Heyrex Limited hardware.

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