Who owns MAC prefix 20A8B9?

20A8B9 is registered to SIEMENS AG in the IEEE MA-L registry.

What devices use 20A8B9?

Any network device with a MAC address starting 20:A8:B9 was manufactured by or for SIEMENS AG.

MA-L · OUI prefix

SIEMENS AG

Any MAC address starting 20:A8:B9 is registered to SIEMENS AG in DE.

OUI prefix	20A8B9
Vendor	SIEMENS AG
Registry	MA-L (24-bit, large block)
Country	DE
Example MAC	20:A8:B9:00:00:00

What this means

The IEEE assigned the MA-L block 20A8B9 to SIEMENS 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 20:A8:B9, it is SIEMENS AG hardware.

Other SIEMENS AG prefixes

SIEMENS AG holds 23 registered blocks in total.

0001E3 000BA3 000E8C 001B1B 080006 10DFFC 208756 286336 302F1E 30B851 384B24 3CFFE4 all 23 »

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