Who owns MAC prefix 0005AD?

0005AD is registered to Topspin Communications, Inc. in the IEEE MA-L registry.

What devices use 0005AD?

Any network device with a MAC address starting 00:05:AD was manufactured by or for Topspin Communications, Inc..

MA-L · OUI prefix

Topspin Communications, Inc.

Any MAC address starting 00:05:AD is registered to Topspin Communications, Inc. in US.

OUI prefix	0005AD
Vendor	Topspin Communications, Inc.
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	00:05:AD:00:00:00

What this means

The IEEE assigned the MA-L block 0005AD to Topspin Communications, Inc.. 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 00:05:AD, it is Topspin Communications, Inc. hardware.

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