Cryptek Inc.

Any device whose MAC address begins with 00:00:8D has a network interface built by Cryptek 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

00:00:8D

Organization

Cryptek Inc.

Address

1501 Moran Road Sterling VA US 20166

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.