Who owns MAC prefix 000651?

000651 is registered to Aspen Networks Inc. in the IEEE MA-L registry.

What devices use 000651?

Any network device with a MAC address starting 00:06:51 was manufactured by or for Aspen Networks Inc..

MA-L · OUI prefix

Aspen Networks Inc.

Any MAC address starting 00:06:51 is registered to Aspen Networks Inc. in US.

OUI prefix	000651
Vendor	Aspen Networks Inc.
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	00:06:51:00:00:00

What this means

The IEEE assigned the MA-L block 000651 to Aspen Networks 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 00:06:51, it is Aspen Networks Inc. hardware.

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