Who owns MAC prefix 000DC4?

000DC4 is registered to Emcore Corporation in the IEEE MA-L registry.

What devices use 000DC4?

Any network device with a MAC address starting 00:0D:C4 was manufactured by or for Emcore Corporation.

MA-L · OUI prefix

Emcore Corporation

Any MAC address starting 00:0D:C4 is registered to Emcore Corporation in US.

OUI prefix	000DC4
Vendor	Emcore Corporation
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	00:0D:C4:00:00:00

What this means

The IEEE assigned the MA-L block 000DC4 to Emcore 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 00:0D:C4, it is Emcore Corporation hardware.

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