Who owns MAC prefix 001DB1?

001DB1 is registered to Crescendo Networks in the IEEE MA-L registry.

What devices use 001DB1?

Any network device with a MAC address starting 00:1D:B1 was manufactured by or for Crescendo Networks.

MA-L · OUI prefix

Crescendo Networks

Any MAC address starting 00:1D:B1 is registered to Crescendo Networks in IL.

OUI prefix	001DB1
Vendor	Crescendo Networks
Registry	MA-L (24-bit, large block)
Country	IL
Example MAC	00:1D:B1:00:00:00

What this means

The IEEE assigned the MA-L block 001DB1 to Crescendo Networks. 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 00:1D:B1, it is Crescendo Networks hardware.

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