Who owns MAC prefix C0D3917?

C0D3917 is registered to ALNETz Co.,LTD in the IEEE MA-M registry.

What devices use C0D3917?

Any network device with a MAC address starting C0:D3:91:7 was manufactured by or for ALNETz Co.,LTD.

MA-M · OUI prefix

ALNETz Co.,LTD

Any MAC address starting C0:D3:91:7 is registered to ALNETz Co.,LTD in JP.

OUI prefix	C0D3917
Vendor	ALNETz Co.,LTD
Registry	MA-M (28-bit, medium block)
Country	JP
Example MAC	C0:D3:91:7:00:00:00

What this means

The IEEE assigned the MA-M block C0D3917 to ALNETz Co.,LTD. 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 C0:D3:91:7, it is ALNETz Co.,LTD hardware.

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