iP or domain name lookup

vii.com.au Server iP：

Current resolution：

domain resolution record：

2019-09-10-----2020-01-16 54.153.194.168

2019-09-10-----2020-01-16 54.153.141.97

2019-09-10-----2020-01-16 54.153.190.151

2019-09-12-----2020-01-16 54.153.148.61