Who owns MAC prefix 000B7C?

000B7C is registered to Electro-Voice Dynacord LLC in the IEEE MA-L registry.

What devices use 000B7C?

Any network device with a MAC address starting 00:0B:7C was manufactured by or for Electro-Voice Dynacord LLC.

MA-L · OUI prefix

Electro-Voice Dynacord LLC

Any MAC address starting 00:0B:7C is registered to Electro-Voice Dynacord LLC in US.

OUI prefix	000B7C
Vendor	Electro-Voice Dynacord LLC
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	00:0B:7C:00:00:00

What this means

The IEEE assigned the MA-L block 000B7C to Electro-Voice Dynacord 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 00:0B:7C, it is Electro-Voice Dynacord LLC hardware.

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