Who owns MAC prefix C0E911?

C0E911 is registered to RealNetworks in the IEEE MA-L registry.

What devices use C0E911?

Any network device with a MAC address starting C0:E9:11 was manufactured by or for RealNetworks.

MA-L · OUI prefix

RealNetworks

Any MAC address starting C0:E9:11 is registered to RealNetworks in US.

OUI prefix	C0E911
Vendor	RealNetworks
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	C0:E9:11:00:00:00

What this means

The IEEE assigned the MA-L block C0E911 to RealNetworks. 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 C0:E9:11, it is RealNetworks hardware.

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