Who owns MAC prefix 002223?

002223 is registered to TimeKeeping Systems, Inc. in the IEEE MA-L registry.

What devices use 002223?

Any network device with a MAC address starting 00:22:23 was manufactured by or for TimeKeeping Systems, Inc..

MA-L · OUI prefix

TimeKeeping Systems, Inc.

Any MAC address starting 00:22:23 is registered to TimeKeeping Systems, Inc. in US.

OUI prefix	002223
Vendor	TimeKeeping Systems, Inc.
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	00:22:23:00:00:00

What this means

The IEEE assigned the MA-L block 002223 to TimeKeeping Systems, 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 00:22:23, it is TimeKeeping Systems, Inc. hardware.

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