12mm Health Technology (Hainan) Co., Ltd.

MAC address prefix 3C:40:15 is registered to 12mm Health Technology (Hainan) Co., Ltd., located at Room A20-8605th FloorBuilding AEntrepreneurship Incubation CenterNo. 266 Nanhai AvenueNational Hi-Tech Industrial Development ZoneHaikou CityHainan ProvinceChinaHaikou Hainan 570100CN.

This registration is classified as MA-L (Mac Address Block Large) containing approximately 16 million MAC addresses

The prefix was registered on 22 July 2025, and no subsequent updates have been recorded.

OUI: 3C:40:15

Vendor name: 12mm Health Technology (Hainan) Co., Ltd.

Address:

Room A20-860
5th Floor
Building A
Entrepreneurship Incubation Center
No. 266 Nanhai Avenue
National Hi-Tech Industrial Development Zone
Haikou City
Hainan Province
China
Haikou Hainan 570100
CN.

Assignment Type MA-L

Mac Address Block Large (previously named OUI). Number of address 2^24 (~16 Million)

Initial registration: 22 July 2025