iP or domain name lookup

s.guotai.me Server iP：

Current resolution：

domain resolution record：

2018-09-08-----2018-09-08 221.179.46.190

2017-03-16-----2017-07-31 45.62.244.22

2017-05-26-----2017-07-31 64.137.171.13

2017-05-26-----2017-07-31 45.77.10.206

2017-03-03-----2017-03-12 45.62.232.109

2016-12-31-----2017-01-28 64.137.165.129

2017-01-11-----2017-01-28 107.191.53.53