Who owns MAC prefix EC1766?

EC1766 is registered to Research Centre Module in the IEEE MA-L registry.

What devices use EC1766?

Any network device with a MAC address starting EC:17:66 was manufactured by or for Research Centre Module.

MA-L · OUI prefix

Research Centre Module

Any MAC address starting EC:17:66 is registered to Research Centre Module in RU.

OUI prefix	EC1766
Vendor	Research Centre Module
Registry	MA-L (24-bit, large block)
Country	RU
Example MAC	EC:17:66:00:00:00

What this means

The IEEE assigned the MA-L block EC1766 to Research Centre Module. 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:17:66, it is Research Centre Module hardware.

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