Who owns MAC prefix 0001C1?

0001C1 is registered to Vitesse Semiconductor Corporation in the IEEE MA-L registry.

What devices use 0001C1?

Any network device with a MAC address starting 00:01:C1 was manufactured by or for Vitesse Semiconductor Corporation.

MA-L · OUI prefix

Vitesse Semiconductor Corporation

Any MAC address starting 00:01:C1 is registered to Vitesse Semiconductor Corporation in DK.

OUI prefix	0001C1
Vendor	Vitesse Semiconductor Corporation
Registry	MA-L (24-bit, large block)
Country	DK
Example MAC	00:01:C1:00:00:00

What this means

The IEEE assigned the MA-L block 0001C1 to Vitesse Semiconductor Corporation. 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 00:01:C1, it is Vitesse Semiconductor Corporation hardware.

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