What this means
The IEEE assigned the MA-L block 0004EF to Polestar Corp.. 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 00:04:EF, it is Polestar Corp. hardware.
Frequently Asked Questions
Who owns MAC prefix 0004EF?
0004EF is registered to Polestar Corp. 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. Polestar Corp.'s block covers 16,777,216 addresses.
What devices use 0004EF?
Any network device with a MAC address starting 00:04:EF was manufactured by or for Polestar Corp..