S. Siedle & Sohne

Any device whose MAC address begins with D4:E3:2C has a network interface built by S. Siedle & Sohne. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

D4:E3:2C

Organization

S. Siedle & Sohne

Address

Bregstrasse 1 Furtwangen DE D-78120

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.