TimeKeeping Systems, Inc.

Any device whose MAC address begins with 00:22:23 has a network interface built by TimeKeeping Systems, Inc.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:22:23

Organization

TimeKeeping Systems, Inc.

Address

30700 Bainbridge Road Solon OH US 44139

Source

IEEE OUI registry

Have a full MAC address? Look it up— we'll also tell you if it's a randomized (private) address rather than a real manufacturer prefix.