Hangzhou Silan Microelectronic Inc

Any device whose MAC address begins with 88:70:33 has a network interface built by Hangzhou Silan Microelectronic Inc. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

88:70:33

Organization

Hangzhou Silan Microelectronic Inc

Address

No.4 HuangGuShan Road Hangzhou Zhejiang CN 310012

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.