Who owns MAC prefix 20AA4B?

20AA4B is registered to Cisco-Linksys, LLC in the IEEE MA-L registry.

What devices use 20AA4B?

Any network device with a MAC address starting 20:AA:4B was manufactured by or for Cisco-Linksys, LLC.

MA-L · OUI prefix

Cisco-Linksys, LLC

Any MAC address starting 20:AA:4B is registered to Cisco-Linksys, LLC in US.

OUI prefix	20AA4B
Vendor	Cisco-Linksys, LLC
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	20:AA:4B:00:00:00

What this means

The IEEE assigned the MA-L block 20AA4B to Cisco-Linksys, LLC. 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:AA:4B, it is Cisco-Linksys, LLC hardware.

Other Cisco-Linksys, LLC prefixes

Cisco-Linksys, LLC holds 25 registered blocks in total.

000C41 000E08 000F66 001217 001310 0014BF 0016B6 001839 0018F8 001A70 001C10 001D7E all 25 »

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