Who owns MAC prefix 28656B?

28656B is registered to Keystone Microtech Corporation in the IEEE MA-L registry.

What devices use 28656B?

Any network device with a MAC address starting 28:65:6B was manufactured by or for Keystone Microtech Corporation.

MA-L · OUI prefix

Keystone Microtech Corporation

Any MAC address starting 28:65:6B is registered to Keystone Microtech Corporation in TW.

OUI prefix	28656B
Vendor	Keystone Microtech Corporation
Registry	MA-L (24-bit, large block)
Country	TW
Example MAC	28:65:6B:00:00:00

What this means

The IEEE assigned the MA-L block 28656B to Keystone Microtech 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 28:65:6B, it is Keystone Microtech Corporation hardware.

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