Honeywell

Any device whose MAC address begins with 58:FC:C8 has a network interface built by Honeywell. 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:FC:C8

Organization

Honeywell

Address

1212 Pittsford Victor Rd Pittsford NY US 14534

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.