CYCLONE MICROSYSTEMS, INC.

Any device whose MAC address begins with 00:80:4D has a network interface built by CYCLONE MICROSYSTEMS, 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

00:80:4D

Organization

CYCLONE MICROSYSTEMS, INC.

Address

25 SCIENCE PARK NEW HAVEN CT US 06511

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.