Who owns MAC prefix 90AC3F?

90AC3F is registered to BrightSign LLC in the IEEE MA-L registry.

What devices use 90AC3F?

Any network device with a MAC address starting 90:AC:3F was manufactured by or for BrightSign LLC.

MA-L · OUI prefix

BrightSign LLC

Any MAC address starting 90:AC:3F is registered to BrightSign LLC in US.

OUI prefix	90AC3F
Vendor	BrightSign LLC
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	90:AC:3F:00:00:00

What this means

The IEEE assigned the MA-L block 90AC3F to BrightSign LLC. 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 90:AC:3F, it is BrightSign LLC hardware.

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