Who owns MAC prefix 7CDD11?

7CDD11 is registered to Chongqing MAS SCI&TECH.Co.,Ltd in the IEEE MA-L registry.

What devices use 7CDD11?

Any network device with a MAC address starting 7C:DD:11 was manufactured by or for Chongqing MAS SCI&TECH.Co.,Ltd.

MA-L · OUI prefix

Chongqing MAS SCI&TECH.Co.,Ltd

Any MAC address starting 7C:DD:11 is registered to Chongqing MAS SCI&TECH.Co.,Ltd in CN.

OUI prefix	7CDD11
Vendor	Chongqing MAS SCI&TECH.Co.,Ltd
Registry	MA-L (24-bit, large block)
Country	CN
Example MAC	7C:DD:11:00:00:00

What this means

The IEEE assigned the MA-L block 7CDD11 to Chongqing MAS SCI&TECH.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:DD:11, it is Chongqing MAS SCI&TECH.Co.,Ltd hardware.

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