What this means
The IEEE assigned the MA-L block B456B9 to Teraspek Technologies 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 B4:56:B9, it is Teraspek Technologies Co.,Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix B456B9?
B456B9 is registered to Teraspek Technologies 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. Teraspek Technologies Co.,Ltd's block covers 16,777,216 addresses.
What devices use B456B9?
Any network device with a MAC address starting B4:56:B9 was manufactured by or for Teraspek Technologies Co.,Ltd.