Who owns MAC prefix 902778?

902778 is registered to Open Infrastructure in the IEEE MA-L registry.

What devices use 902778?

Any network device with a MAC address starting 90:27:78 was manufactured by or for Open Infrastructure.

MA-L · OUI prefix

Open Infrastructure

Any MAC address starting 90:27:78 is registered to Open Infrastructure in CH.

OUI prefix	902778
Vendor	Open Infrastructure
Registry	MA-L (24-bit, large block)
Country	CH
Example MAC	90:27:78:00:00:00

What this means

The IEEE assigned the MA-L block 902778 to Open Infrastructure. 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 90:27:78, it is Open Infrastructure hardware.

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