Seongji Industry Company
Any device whose MAC address begins with 40:CA:63 has a network interface built by Seongji Industry Company. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.
- OUI prefix
- 40:CA:63
- Organization
- Seongji Industry Company
- Address
- 54-33, Dongtanhana 1-gil Hwaseong-si Gyeonggi-do KR 18423
- 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.