Newbest Development Limited

Any device whose MAC address begins with 00:0D:42 has a network interface built by Newbest Development Limited. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:0D:42

Organization

Newbest Development Limited

Address

3/F Unit 311-312 Shatin NT HK

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.