What this means
The IEEE assigned the MA-L block 78F9B4 to Nokia Solutions and Networks GmbH & 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 78:F9:B4, it is Nokia Solutions and Networks GmbH & Co. KG hardware.
Frequently Asked Questions
Who owns MAC prefix 78F9B4?
78F9B4 is registered to Nokia Solutions and Networks GmbH & 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. Nokia Solutions and Networks GmbH & Co. KG's block covers 16,777,216 addresses.
What devices use 78F9B4?
Any network device with a MAC address starting 78:F9:B4 was manufactured by or for Nokia Solutions and Networks GmbH & Co. KG.