What this means
The IEEE assigned the MA-L block B4A4B5 to Zen Eye 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 B4:A4:B5, it is Zen Eye Co.,Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix B4A4B5?
B4A4B5 is registered to Zen Eye 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. Zen Eye Co.,Ltd's block covers 16,777,216 addresses.
What devices use B4A4B5?
Any network device with a MAC address starting B4:A4:B5 was manufactured by or for Zen Eye Co.,Ltd.