What this means
The IEEE assigned the MA-L block 001B47 to Futarque A/S. 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 00:1B:47, it is Futarque A/S hardware.
Frequently Asked Questions
Who owns MAC prefix 001B47?
001B47 is registered to Futarque A/S 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. Futarque A/S's block covers 16,777,216 addresses.
What devices use 001B47?
Any network device with a MAC address starting 00:1B:47 was manufactured by or for Futarque A/S.