Who owns MAC prefix C4BAA3?

C4BAA3 is registered to Beijing Winicssec Technologies Co., Ltd. in the IEEE MA-L registry.

What devices use C4BAA3?

Any network device with a MAC address starting C4:BA:A3 was manufactured by or for Beijing Winicssec Technologies Co., Ltd..

MA-L · OUI prefix

Beijing Winicssec Technologies Co., Ltd.

Any MAC address starting C4:BA:A3 is registered to Beijing Winicssec Technologies Co., Ltd. in CN.

OUI prefix	C4BAA3
Vendor	Beijing Winicssec Technologies Co., Ltd.
Registry	MA-L (24-bit, large block)
Country	CN
Example MAC	C4:BA:A3:00:00:00

What this means

The IEEE assigned the MA-L block C4BAA3 to Beijing Winicssec Technologies 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 C4:BA:A3, it is Beijing Winicssec Technologies Co., Ltd. hardware.

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