Who owns MAC prefix 44C39B?

44C39B is registered to OOO RUBEZH NPO in the IEEE MA-L registry.

What devices use 44C39B?

Any network device with a MAC address starting 44:C3:9B was manufactured by or for OOO RUBEZH NPO.

MA-L · OUI prefix

OOO RUBEZH NPO

Any MAC address starting 44:C3:9B is registered to OOO RUBEZH NPO in RU.

OUI prefix	44C39B
Vendor	OOO RUBEZH NPO
Registry	MA-L (24-bit, large block)
Country	RU
Example MAC	44:C3:9B:00:00:00

What this means

The IEEE assigned the MA-L block 44C39B to OOO RUBEZH NPO. 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 44:C3:9B, it is OOO RUBEZH NPO hardware.

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