shell:$ nslookup -timeout=2 -retry=1 'daa.uit.edu.vn' Server: 127.0.0.53 Address: 127.0.0.53#53 Non-authoritative answer: Name: daa.uit.edu.vn Address: 45.122.249.78 Name: daa.uit.edu.vn Address: 118.69.123.140