What devices use 7C8D91?

Any network device with a MAC address starting 7C:8D:91 was manufactured by or for Shanghai Hongzhuo Information Technology co.,LTD.

MA-L · OUI prefix

Shanghai Hongzhuo Information Technology co.,LTD

Q: Who owns MAC prefix 7C8D91?

7C8D91 is registered to Shanghai Hongzhuo Information Technology co.,LTD in the IEEE MA-L registry.

Any MAC address starting 7C:8D:91 is registered to Shanghai Hongzhuo Information Technology co.,LTD in CN.

OUI prefix	7C8D91
Vendor	Shanghai Hongzhuo Information Technology co.,LTD
Registry	MA-L (24-bit, large block)
Country	CN
Example MAC	7C:8D:91:00:00:00

What this means

The IEEE assigned the MA-L block 7C8D91 to Shanghai Hongzhuo 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 7C:8D:91, it is Shanghai Hongzhuo Information Technology co.,LTD hardware.

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