SenTec AG

Any device whose MAC address begins with 00:25:5F has a network interface built by SenTec AG. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:25:5F

Organization

SenTec AG

Address

Ringstrasse 39 Therwil CH 4106

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.