Who owns MAC prefix 0021D3?

0021D3 is registered to BOCOM SECURITY(ASIA PACIFIC) LIMITED in the IEEE MA-L registry.

What devices use 0021D3?

Any network device with a MAC address starting 00:21:D3 was manufactured by or for BOCOM SECURITY(ASIA PACIFIC) LIMITED.

MA-L · OUI prefix

BOCOM SECURITY(ASIA PACIFIC) LIMITED

Any MAC address starting 00:21:D3 is registered to BOCOM SECURITY(ASIA PACIFIC) LIMITED in CN.

OUI prefix	0021D3
Vendor	BOCOM SECURITY(ASIA PACIFIC) LIMITED
Registry	MA-L (24-bit, large block)
Country	CN
Example MAC	00:21:D3:00:00:00

What this means

The IEEE assigned the MA-L block 0021D3 to BOCOM SECURITY(ASIA PACIFIC) LIMITED. 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:D3, it is BOCOM SECURITY(ASIA PACIFIC) LIMITED hardware.

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