Inner Mongolia Yin An Science & Technology Development Co.,L

Any device whose MAC address begins with 00:1F:21 has a network interface built by Inner Mongolia Yin An Science & Technology Development Co.,L. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:1F:21

Organization

Inner Mongolia Yin An Science & Technology Development Co.,L

Address

YinAn Building Yiwei Road.RuYi Beijing CN 010010

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.