MAC Address Lookup
Find the vendor name of a device by entering an OUI or a MAC address
JoulWatt Technology Co., Ltd
MAC address prefix A4:7B:52 is registered to JoulWatt Technology Co., Ltd, located at 9th FloorChuangye BuildingNo.99 Huaxing RoadXihu DistrictHangzhouChinaHangzhou Zhejiang 311100CN.
This registration is classified as MA-L (Mac Address Block Large) containing approximately 16 million MAC addresses
The prefix was registered on 18 June 2025, and no subsequent updates have been recorded.
OUI: A4:7B:52
Vendor name: JoulWatt Technology Co., Ltd
Address:
Assignment Type MA-L 9th Floor
Chuangye Building
No.99 Huaxing Road
Xihu District
Hangzhou
China
Hangzhou Zhejiang 311100
CN.
Mac Address Block Large (previously named OUI). Number of address 2^24 (~16 Million)
Initial registration: 18 June 2025
