Who owns MAC prefix 28B77C4?

28B77C4 is registered to Annapurna labs in the IEEE MA-M registry.

What devices use 28B77C4?

Any network device with a MAC address starting 28:B7:7C:4 was manufactured by or for Annapurna labs.

MA-M · OUI prefix

Annapurna labs

Any MAC address starting 28:B7:7C:4 is registered to Annapurna labs in IL.

OUI prefix	28B77C4
Vendor	Annapurna labs
Registry	MA-M (28-bit, medium block)
Country	IL
Example MAC	28:B7:7C:4:00:00:00

What this means

The IEEE assigned the MA-M block 28B77C4 to Annapurna labs. 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 28:B7:7C:4, it is Annapurna labs hardware.

Other Annapurna labs prefixes

Annapurna labs holds 156 registered blocks in total.

0069670 006A5E9 006A5EA 008DF46 04A16F8 04C98B4 04C98B6 0826AE9 08F80D3 0C47A92 0C47A97 0C47A9C all 156 »

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