What this means
The IEEE assigned the MA-M block 5491AF5 to Shenzhen IDSTE 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 54:91:AF:5, it is Shenzhen IDSTE Information Technology Co., LTD hardware.
Frequently Asked Questions
Who owns MAC prefix 5491AF5?
5491AF5 is registered to Shenzhen IDSTE 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 IDSTE Information Technology Co., LTD's block covers 1,048,576 addresses.
What devices use 5491AF5?
Any network device with a MAC address starting 54:91:AF:5 was manufactured by or for Shenzhen IDSTE Information Technology Co., LTD.