Who owns MAC prefix 78D8009?

78D8009 is registered to SightLine Applications in the IEEE MA-M registry.

What devices use 78D8009?

Any network device with a MAC address starting 78:D8:00:9 was manufactured by or for SightLine Applications.

MA-M · OUI prefix

SightLine Applications

Any MAC address starting 78:D8:00:9 is registered to SightLine Applications in US.

OUI prefix	78D8009
Vendor	SightLine Applications
Registry	MA-M (28-bit, medium block)
Country	US
Example MAC	78:D8:00:9:00:00:00

What this means

The IEEE assigned the MA-M block 78D8009 to SightLine Applications. 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 78:D8:00:9, it is SightLine Applications hardware.

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