SE-Elektronic GmbH

Any device whose MAC address begins with 00:25:51 has a network interface built by SE-Elektronic 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

00:25:51

Organization

SE-Elektronic GmbH

Address

Eythstraße 16 Göppingen DE 73037

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.