Crystalfontz America, Inc.

Any device whose MAC address begins with 58:B9:E1 has a network interface built by Crystalfontz America, Inc.. 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:B9:E1

Organization

Crystalfontz America, Inc.

Address

12412 E. Saltese Ave. Spokane Valley WA US 99216

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.