Swisscom Hospitality Services SA

Any device whose MAC address begins with 00:12:66 has a network interface built by Swisscom Hospitality Services SA. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:12:66

Organization

Swisscom Hospitality Services SA

Address

Chemin de l'Etang 65 1211 Geneva CH

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.