Who owns MAC prefix 0000A9?

0000A9 is registered to NETWORK SYSTEMS CORP. in the IEEE MA-L registry.

What devices use 0000A9?

Any network device with a MAC address starting 00:00:A9 was manufactured by or for NETWORK SYSTEMS CORP..

MA-L · OUI prefix

NETWORK SYSTEMS CORP.

Any MAC address starting 00:00:A9 is registered to NETWORK SYSTEMS CORP. in US.

OUI prefix	0000A9
Vendor	NETWORK SYSTEMS CORP.
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	00:00:A9:00:00:00

What this means

The IEEE assigned the MA-L block 0000A9 to NETWORK SYSTEMS CORP.. 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 00:00:A9, it is NETWORK SYSTEMS CORP. hardware.

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