What this means
The IEEE assigned the MA-L block 54F666 to Berthold Technologies GmbH and Co.KG. 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 54:F6:66, it is Berthold Technologies GmbH and Co.KG hardware.
Frequently Asked Questions
Who owns MAC prefix 54F666?
54F666 is registered to Berthold Technologies GmbH and Co.KG 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. Berthold Technologies GmbH and Co.KG's block covers 16,777,216 addresses.
What devices use 54F666?
Any network device with a MAC address starting 54:F6:66 was manufactured by or for Berthold Technologies GmbH and Co.KG.