Who owns MAC prefix B09E1B?

B09E1B is registered to Butlr Technologies, Inc. in the IEEE MA-L registry.

What devices use B09E1B?

Any network device with a MAC address starting B0:9E:1B was manufactured by or for Butlr Technologies, Inc..

MA-L · OUI prefix

Butlr Technologies, Inc.

Any MAC address starting B0:9E:1B is registered to Butlr Technologies, Inc. in US.

OUI prefix	B09E1B
Vendor	Butlr Technologies, Inc.
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	B0:9E:1B:00:00:00

What this means

The IEEE assigned the MA-L block B09E1B to Butlr Technologies, 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 B0:9E:1B, it is Butlr Technologies, Inc. hardware.

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