What this means
The IEEE assigned the MA-M block 50DE19A to Tannak International AB. 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:DE:19:A, it is Tannak International AB hardware.
Frequently Asked Questions
Who owns MAC prefix 50DE19A?
50DE19A is registered to Tannak International AB in the IEEE MA-M registry.
What does the MA-M registry type mean?
An MA-M assignment covers 28 bits of the address, giving the vendor 1,048,576 device addresses, a quarter of a full MA-L block. Tannak International AB's block covers 1,048,576 addresses.
What devices use 50DE19A?
Any network device with a MAC address starting 50:DE:19:A was manufactured by or for Tannak International AB.