Who owns MAC prefix CC6DEF?

CC6DEF is registered to TJK Tietolaite Oy in the IEEE MA-L registry.

What devices use CC6DEF?

Any network device with a MAC address starting CC:6D:EF was manufactured by or for TJK Tietolaite Oy.

MA-L · OUI prefix

TJK Tietolaite Oy

Any MAC address starting CC:6D:EF is registered to TJK Tietolaite Oy in FI.

OUI prefix	CC6DEF
Vendor	TJK Tietolaite Oy
Registry	MA-L (24-bit, large block)
Country	FI
Example MAC	CC:6D:EF:00:00:00

What this means

The IEEE assigned the MA-L block CC6DEF to TJK Tietolaite Oy. 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 CC:6D:EF, it is TJK Tietolaite Oy hardware.

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