Sigrand

Any device whose MAC address begins with 58:BD:F9 has a network interface built by Sigrand. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

58:BD:F9

Organization

Sigrand

Address

UNIT 602 6/F, Causeway Bay Comm Bldg, Hong Kong HK 999077

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.