OUI Lookup
0438dc
China Unicom Online Information Technology Co.,Ltd
Manufacturer Information
- OUI Prefix
- 0438dc
- Manufacturer
- China Unicom Online Information Technology Co.,Ltd
- Address
- 133 Xidan North St, Xicheng District, Beijing Beijing CN 100000
- Last updated
- 6/8/2026
Vendor Statistics
- Total prefixes
- 1
- Block type
- MA-L
- Available addresses
- ~16 millones
About prefix 0438DC
The OUI prefix 0438DC is assigned to China Unicom Online Information Technology Co.,Ltd, based in 133 Xidan North St, Xicheng District, Beijing Beijing CN 100000 . It is a MA-L type block of 24 bits (first three octets). Allows up to 16 million unique MAC addresses. If you find this prefix on your network, the devices belong to China Unicom Online Information Technology Co.,Ltd.