What this means
The IEEE assigned the MA-L block 50A0A4 to Nokia. 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 50:A0:A4, it is Nokia hardware.
Frequently Asked Questions
Who owns MAC prefix 50A0A4?
50A0A4 is registered to Nokia 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's block covers 16,777,216 addresses.
What devices use 50A0A4?
Any network device with a MAC address starting 50:A0:A4 was manufactured by or for Nokia.