ALONG COMMUNICATION TECHNOLOGY

Any device whose MAC address begins with 3C:91:74 has a network interface built by ALONG COMMUNICATION TECHNOLOGY. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

3C:91:74

Organization

ALONG COMMUNICATION TECHNOLOGY

Address

1301, Zhenye International Business Center, Shenzhen Guandong CN 518000

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.