What this means
The IEEE assigned the MA-M block 0C47A99 to Shanghai Sigen New Energy 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 0C:47:A9:9, it is Shanghai Sigen New Energy Technology Co., Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix 0C47A99?
0C47A99 is registered to Shanghai Sigen New Energy 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. Shanghai Sigen New Energy Technology Co., Ltd's block covers 1,048,576 addresses.
What devices use 0C47A99?
Any network device with a MAC address starting 0C:47:A9:9 was manufactured by or for Shanghai Sigen New Energy Technology Co., Ltd.