Who owns MAC prefix 641666?

641666 is registered to Nest Labs Inc. in the IEEE MA-L registry.

What devices use 641666?

Any network device with a MAC address starting 64:16:66 was manufactured by or for Nest Labs Inc..

MA-L · OUI prefix

Nest Labs Inc.

Any MAC address starting 64:16:66 is registered to Nest Labs Inc. in US.

OUI prefix	641666
Vendor	Nest Labs Inc.
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	64:16:66:00:00:00

What this means

The IEEE assigned the MA-L block 641666 to Nest Labs Inc.. 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 64:16:66, it is Nest Labs Inc. hardware.

Other Nest Labs Inc. prefixes

Nest Labs Inc. holds 2 registered blocks in total.

18B430

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