What this means
The IEEE assigned the MA-L block 00B4F5 to DongGuan Siyoto Electronics 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:B4:F5, it is DongGuan Siyoto Electronics Co., Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix 00B4F5?
00B4F5 is registered to DongGuan Siyoto Electronics 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. DongGuan Siyoto Electronics Co., Ltd's block covers 16,777,216 addresses.
What devices use 00B4F5?
Any network device with a MAC address starting 00:B4:F5 was manufactured by or for DongGuan Siyoto Electronics Co., Ltd.