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Ensure your phone or computer is connected to the Viettel Wi-Fi. For the most stable connection, use an Ethernet cable to connect your computer directly to the router's LAN port. 192.168 viettel
The IP range 192.168.0.0 to 192.168.255.255 is a private IP address block reserved for local area networks (LANs). This means these addresses are used inside your home or office network and are not accessible directly from the public internet. Launch any browser (Chrome, Safari, or Firefox)