What this means
The IEEE assigned the MA-M block 745BC5E to Qingdao Wintec System 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 74:5B:C5:E, it is Qingdao Wintec System Co., Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix 745BC5E?
745BC5E is registered to Qingdao Wintec System 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. Qingdao Wintec System Co., Ltd's block covers 1,048,576 addresses.
What devices use 745BC5E?
Any network device with a MAC address starting 74:5B:C5:E was manufactured by or for Qingdao Wintec System Co., Ltd.