Who owns MAC prefix 001221?

001221 is registered to B.Braun Melsungen AG in the IEEE MA-L registry.

What devices use 001221?

Any network device with a MAC address starting 00:12:21 was manufactured by or for B.Braun Melsungen AG.

MA-L · OUI prefix

B.Braun Melsungen AG

Any MAC address starting 00:12:21 is registered to B.Braun Melsungen AG in DE.

OUI prefix	001221
Vendor	B.Braun Melsungen AG
Registry	MA-L (24-bit, large block)
Country	DE
Example MAC	00:12:21:00:00:00

What this means

The IEEE assigned the MA-L block 001221 to B.Braun Melsungen AG. 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 00:12:21, it is B.Braun Melsungen AG hardware.

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