Who owns MAC prefix EC4C4D?

EC4C4D is registered to ZAO NPK RoTeK in the IEEE MA-L registry.

What devices use EC4C4D?

Any network device with a MAC address starting EC:4C:4D was manufactured by or for ZAO NPK RoTeK.

MA-L · OUI prefix

ZAO NPK RoTeK

Any MAC address starting EC:4C:4D is registered to ZAO NPK RoTeK in RU.

OUI prefix	EC4C4D
Vendor	ZAO NPK RoTeK
Registry	MA-L (24-bit, large block)
Country	RU
Example MAC	EC:4C:4D:00:00:00

What this means

The IEEE assigned the MA-L block EC4C4D to ZAO NPK RoTeK. 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 EC:4C:4D, it is ZAO NPK RoTeK hardware.

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