What this means
The IEEE assigned the MA-L block 00258D to Haier. 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 00:25:8D, it is Haier hardware.
Frequently Asked Questions
Who owns MAC prefix 00258D?
00258D is registered to Haier 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. Haier's block covers 16,777,216 addresses.
What devices use 00258D?
Any network device with a MAC address starting 00:25:8D was manufactured by or for Haier.