Beijing Guming Communication Technology Co., Ltd.

Any device whose MAC address begins with 70:A3:A4 has a network interface built by Beijing Guming Communication Technology Co., 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

70:A3:A4

Organization

Beijing Guming Communication Technology Co., Ltd.

Address

Room 202-6, 2nd Floor, Building 1, No. 8 Courtyard, Yongchang Middle Road, Beijing Economic and Technological Development Area, Beijing Beijing Beijing CN 100176

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.