Comark Interactive Solutions

Any device whose MAC address begins with 00:03:DD has a network interface built by Comark Interactive Solutions. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:03:DD

Organization

Comark Interactive Solutions

Address

93 West St. Medfield MA US 02052

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.