Electronics Design Services, Co., Ltd.

Any device whose MAC address begins with 00:13:9F has a network interface built by Electronics Design Services, Co., Ltd.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:13:9F

Organization

Electronics Design Services, Co., Ltd.

Address

5-10-20 Tokumaru Itabashi-ku Tokyo JP 175-0083

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.