What this means
The IEEE assigned the MA-M block 6891D05 to NIPK Electron Co.. 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 68:91:D0:5, it is NIPK Electron Co. hardware.
Frequently Asked Questions
Who owns MAC prefix 6891D05?
6891D05 is registered to NIPK Electron Co. 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. NIPK Electron Co.'s block covers 1,048,576 addresses.
What devices use 6891D05?
Any network device with a MAC address starting 68:91:D0:5 was manufactured by or for NIPK Electron Co..