What this means
The IEEE assigned the MA-L block 00259B to Beijing PKUNITY Microsystems Technology Co., Ltd. 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 00:25:9B, it is Beijing PKUNITY Microsystems Technology Co., Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix 00259B?
00259B is registered to Beijing PKUNITY Microsystems Technology Co., Ltd 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. Beijing PKUNITY Microsystems Technology Co., Ltd's block covers 16,777,216 addresses.
What devices use 00259B?
Any network device with a MAC address starting 00:25:9B was manufactured by or for Beijing PKUNITY Microsystems Technology Co., Ltd.