Who owns MAC prefix B81F5E?

B81F5E is registered to Apption Labs Limited in the IEEE MA-L registry.

What devices use B81F5E?

Any network device with a MAC address starting B8:1F:5E was manufactured by or for Apption Labs Limited.

MA-L · OUI prefix

Apption Labs Limited

Any MAC address starting B8:1F:5E is registered to Apption Labs Limited.

OUI prefix	B81F5E
Vendor	Apption Labs Limited
Registry	MA-L (24-bit, large block)
Example MAC	B8:1F:5E:00:00:00

What this means

The IEEE assigned the MA-L block B81F5E to Apption Labs Limited. 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 B8:1F:5E, it is Apption Labs Limited hardware.

Other Apption Labs Limited prefixes

Apption Labs Limited holds 2 registered blocks in total.

D0D94F8

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