Who owns MAC prefix EC7D9D?

EC7D9D is registered to CPI in the IEEE MA-L registry.

What devices use EC7D9D?

Any network device with a MAC address starting EC:7D:9D was manufactured by or for CPI.

MA-L · OUI prefix

CPI

Any MAC address starting EC:7D:9D is registered to CPI in US.

OUI prefix	EC7D9D
Vendor	CPI
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	EC:7D:9D:00:00:00

What this means

The IEEE assigned the MA-L block EC7D9D to CPI. 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 EC:7D:9D, it is CPI hardware.

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