MAC Address Lookup
Find the vendor name of a device by entering an OUI or a MAC address
China Unicom Online Information Technology Co.,Ltd
MAC address prefix 04:38:DC is registered to China Unicom Online Information Technology Co.,Ltd, located at 133 Xidan North StXicheng DistrictBeijingBeijing 100000CN.
This registration is classified as MA-L (Mac Address Block Large) containing approximately 16 million MAC addresses
The prefix was registered on 14 April 2023, and no subsequent updates have been recorded.
OUI: 04:38:DC
Vendor name: China Unicom Online Information Technology Co.,Ltd
Address:
Assignment Type MA-L 133 Xidan North St
Xicheng District
Beijing
Beijing 100000
CN.
Mac Address Block Large (previously named OUI). Number of address 2^24 (~16 Million)
Initial registration: 14 April 2023
