Who owns MAC prefix 001B42?

001B42 is registered to Wise & Blue in the IEEE MA-L registry.

What devices use 001B42?

Any network device with a MAC address starting 00:1B:42 was manufactured by or for Wise & Blue.

MA-L · OUI prefix

Wise & Blue

Any MAC address starting 00:1B:42 is registered to Wise & Blue in KR.

OUI prefix	001B42
Vendor	Wise & Blue
Registry	MA-L (24-bit, large block)
Country	KR
Example MAC	00:1B:42:00:00:00

What this means

The IEEE assigned the MA-L block 001B42 to Wise & Blue. 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 00:1B:42, it is Wise & Blue hardware.

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