Fitbit Inc.

Any device whose MAC address begins with 18:00:DB has a network interface built by Fitbit 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

18:00:DB

Organization

Fitbit Inc.

Address

150 Spear St Ste 200 San Francisco CA US 94105

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.