What this means
The IEEE assigned the MA-M block 64FB81A to Bronkhorst High-Tech BV. 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 64:FB:81:A, it is Bronkhorst High-Tech BV hardware.
Frequently Asked Questions
Who owns MAC prefix 64FB81A?
64FB81A is registered to Bronkhorst High-Tech BV 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. Bronkhorst High-Tech BV's block covers 1,048,576 addresses.
What devices use 64FB81A?
Any network device with a MAC address starting 64:FB:81:A was manufactured by or for Bronkhorst High-Tech BV.