Y&H E&C Co.,LTD.

Any device whose MAC address begins with 04:D7:83 has a network interface built by Y&H E&C 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

04:D7:83

Organization

Y&H E&C Co.,LTD.

Address

1501 Daerung Technotown 224-5 Anyang-city Gyeonggi-do KR 431-062

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.