Who owns MAC prefix F81CE5?

F81CE5 is registered to Telefonbau Behnke GmbH in the IEEE MA-L registry.

What devices use F81CE5?

Any network device with a MAC address starting F8:1C:E5 was manufactured by or for Telefonbau Behnke GmbH.

MA-L · OUI prefix

Telefonbau Behnke GmbH

Any MAC address starting F8:1C:E5 is registered to Telefonbau Behnke GmbH in DE.

OUI prefix	F81CE5
Vendor	Telefonbau Behnke GmbH
Registry	MA-L (24-bit, large block)
Country	DE
Example MAC	F8:1C:E5:00:00:00

What this means

The IEEE assigned the MA-L block F81CE5 to Telefonbau Behnke GmbH. 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 F8:1C:E5, it is Telefonbau Behnke GmbH hardware.

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