What devices use 30A3B5?

Any network device with a MAC address starting 30:A3:B5 was manufactured by or for Jiangsu Best Tone Information Service Co., Ltd.

MA-L · OUI prefix

Jiangsu Best Tone Information Service Co., Ltd

Q: Who owns MAC prefix 30A3B5?

30A3B5 is registered to Jiangsu Best Tone Information Service Co., Ltd in the IEEE MA-L registry.

Any MAC address starting 30:A3:B5 is registered to Jiangsu Best Tone Information Service Co., Ltd in CN.

OUI prefix	30A3B5
Vendor	Jiangsu Best Tone Information Service Co., Ltd
Registry	MA-L (24-bit, large block)
Country	CN
Example MAC	30:A3:B5:00:00:00

What this means

The IEEE assigned the MA-L block 30A3B5 to Jiangsu Best Tone Information Service 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 30:A3:B5, it is Jiangsu Best Tone Information Service Co., Ltd hardware.

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