E3 Enterprise

Any device whose MAC address begins with 58:49:25 has a network interface built by E3 Enterprise. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

58:49:25

Organization

E3 Enterprise

Address

32F, Shinjuku Nomura Building Tokyo JP 163-0532

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.