SUREMAN COMP. & COMMUN. CORP.

Any device whose MAC address begins with 00:00:21 has a network interface built by SUREMAN COMP. & COMMUN. CORP.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:00:21

Organization

SUREMAN COMP. & COMMUN. CORP.

Address

10F-5 NO. 7, SEC. 3 TAIPEI TAIWAN, TW R.O.C.

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.