Chipsea Technologies (Shenzhen) Corp.

Any device whose MAC address begins with 28:29:47 has a network interface built by Chipsea Technologies (Shenzhen) Corp.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

28:29:47

Organization

Chipsea Technologies (Shenzhen) Corp.

Address

3 / F, Block A, Building 2, Shenzhen Bay Innovation Technology Center, No.3156 keyuan South Road, Yuehai Street, Nanshan District, Shenzhen Shenzhen Guangdong 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.