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.
Frequently Asked Questions
Who owns MAC prefix 04888C?
04888C is registered to Eifelwerk Butler Systeme GmbH in the IEEE MA-L registry.
What does the MA-L registry type mean?
An MA-L assignment, the IEEE's original OUI format, gives the vendor the first three octets and 16,777,216 device addresses under them. Eifelwerk Butler Systeme GmbH's block covers 16,777,216 addresses.
What devices use 04888C?
Any network device with a MAC address starting 04:88:8C was manufactured by or for Eifelwerk Butler Systeme GmbH.