Concept Development, Inc.

Any device whose MAC address begins with 18:2C:91 has a network interface built by Concept Development, 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

18:2C:91

Organization

Concept Development, Inc.

Address

1881 Langley Avenue Irvine CA US 92614-5623

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.