EID

Any device whose MAC address begins with 1C:7C:11 has a network interface built by EID. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

1C:7C:11

Organization

EID

Address

Rua Quinta dos Medronheiros Charneca da Caparica PT 2820-486

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.