iP or domain name lookup

collect.serious.li Server iP：

Current resolution：

domain resolution record：

2021-02-18-----2021-02-18 172.217.160.83

2021-02-18-----2021-02-18 216.58.200.243

2021-02-18-----2021-02-18 172.217.160.115

2021-02-18-----2021-02-18 216.58.200.51

2021-02-18-----2021-02-18 172.217.161.147

2020-12-20-----2021-01-16 216.58.221.83

2021-01-16-----2021-01-16 172.217.16.147

2021-01-16-----2021-01-16 172.217.4.179

2021-01-16-----2021-01-16 74.125.24.121

2021-01-16-----2021-01-16 172.217.14.83

2020-12-20-----2020-12-20 172.217.18.179

2020-12-20-----2020-12-20 142.250.68.19