DTL Broadcast Ltd

Any device whose MAC address begins with 00:1B:73 has a network interface built by DTL Broadcast Ltd. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:1B:73

Organization

DTL Broadcast Ltd

Address

Johnson's Estate HAYES Middlesex GB UB3 3BA

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.