SHENZHEN SPOTMAU INFORMATION TECHNOLIGY CO., Ltd

Any device whose MAC address begins with E4:C1:F1 has a network interface built by SHENZHEN SPOTMAU INFORMATION TECHNOLIGY 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

E4:C1:F1

Organization

SHENZHEN SPOTMAU INFORMATION TECHNOLIGY CO., Ltd

Address

10F, Block D, 5th Building, Shenzhen Software Industrial Base, Haitian 2nd Rd,Nanshan District Shenzhen Guangdong CN 518057

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.