Who owns MAC prefix DC1D9F?

DC1D9F is registered to U & B tech in the IEEE MA-L registry.

What devices use DC1D9F?

Any network device with a MAC address starting DC:1D:9F was manufactured by or for U & B tech.

MA-L · OUI prefix

U & B tech

Any MAC address starting DC:1D:9F is registered to U & B tech in KR.

OUI prefix	DC1D9F
Vendor	U & B tech
Registry	MA-L (24-bit, large block)
Country	KR
Example MAC	DC:1D:9F:00:00:00

What this means

The IEEE assigned the MA-L block DC1D9F to U & B tech. 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 DC:1D:9F, it is U & B tech hardware.

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