What this means
The IEEE assigned the MA-M block 189BA58 to Shenzhen Tong Tai Yi information 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 18:9B:A5:8, it is Shenzhen Tong Tai Yi information Technology Co.,Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix 189BA58?
189BA58 is registered to Shenzhen Tong Tai Yi information Technology Co.,Ltd in the IEEE MA-M registry.
What does the MA-M registry type mean?
An MA-M assignment covers 28 bits of the address, giving the vendor 1,048,576 device addresses, a quarter of a full MA-L block. Shenzhen Tong Tai Yi information Technology Co.,Ltd's block covers 1,048,576 addresses.
What devices use 189BA58?
Any network device with a MAC address starting 18:9B:A5:8 was manufactured by or for Shenzhen Tong Tai Yi information Technology Co.,Ltd.