Who owns MAC prefix 0021A7?

0021A7 is registered to Hantle System Co., Ltd. in the IEEE MA-L registry.

What devices use 0021A7?

Any network device with a MAC address starting 00:21:A7 was manufactured by or for Hantle System Co., Ltd..

MA-L · OUI prefix

Hantle System Co., Ltd.

Any MAC address starting 00:21:A7 is registered to Hantle System Co., Ltd. in KR.

OUI prefix	0021A7
Vendor	Hantle System Co., Ltd.
Registry	MA-L (24-bit, large block)
Country	KR
Example MAC	00:21:A7:00:00:00

What this means

The IEEE assigned the MA-L block 0021A7 to Hantle System Co., Ltd.. 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 00:21:A7, it is Hantle System Co., Ltd. hardware.

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