iP or domain name lookup

901my.cn Server iP：

Current resolution：

domain resolution record：

2020-06-15-----2020-06-15 168.206.156.121

2018-09-28-----2018-09-28 221.179.46.194

2018-09-28-----2018-09-28 221.179.46.190

2017-12-24-----2017-12-24 184.168.221.54

2017-10-07-----2017-11-11 137.59.19.195

2017-04-27-----2017-04-30 45.125.34.49