CTRING

Any device whose MAC address begins with 00:19:9C has a network interface built by CTRING. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:19:9C

Organization

CTRING

Address

#514, World Meridian Venture Center II Keumcheon-gu Seoul KR 153-803

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.