What this means
The IEEE assigned the MA-L block 648125 to Alphatron Marine 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 64:81:25, it is Alphatron Marine BV hardware.
Frequently Asked Questions
Who owns MAC prefix 648125?
648125 is registered to Alphatron Marine BV 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. Alphatron Marine BV's block covers 16,777,216 addresses.
What devices use 648125?
Any network device with a MAC address starting 64:81:25 was manufactured by or for Alphatron Marine BV.