Cadco Systems

Any device whose MAC address begins with 00:12:20 has a network interface built by Cadco Systems. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:12:20

Organization

Cadco Systems

Address

2363 Merritt Dr Garland Texas US 75041

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.