Alec Sicherheitssysteme GmbH

Any device whose MAC address begins with 00:27:1B has a network interface built by Alec Sicherheitssysteme GmbH. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:27:1B

Organization

Alec Sicherheitssysteme GmbH

Address

Friedrich-Hoelscher-Strasse 367 Dortmund DE 44328

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.