SGB GROUP LTD.

Any device whose MAC address begins with 48:71:19 has a network interface built by SGB GROUP 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

48:71:19

Organization

SGB GROUP LTD.

Address

13F,No.192,Sec.2,Chung Hsin Rd.,Hsin Tien City Taipei TW 231

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.