Who owns MAC prefix 04888C?

04888C is registered to Eifelwerk Butler Systeme GmbH in the IEEE MA-L registry.

What devices use 04888C?

Any network device with a MAC address starting 04:88:8C was manufactured by or for Eifelwerk Butler Systeme GmbH.

MA-L · OUI prefix

Eifelwerk Butler Systeme GmbH

Any MAC address starting 04:88:8C is registered to Eifelwerk Butler Systeme GmbH in DE.

OUI prefix	04888C
Vendor	Eifelwerk Butler Systeme GmbH
Registry	MA-L (24-bit, large block)
Country	DE
Example MAC	04:88:8C:00:00:00

What this means

The IEEE assigned the MA-L block 04888C to Eifelwerk Butler Systeme 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 04:88:8C, it is Eifelwerk Butler Systeme GmbH hardware.

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