iP or domain name lookup

man.intostudy.com Server iP：

Current resolution：

domain resolution record：

2021-11-18-----2021-11-18 52.212.244.215

2021-11-18-----2021-11-18 54.194.70.92

2021-05-28-----2021-05-28 52.49.41.240

2021-05-28-----2021-05-28 34.252.6.53

2021-01-29-----2021-03-03 34.249.233.102

2021-03-03-----2021-03-03 52.209.220.189

2021-01-29-----2021-01-29 54.154.78.229

2020-10-07-----2020-10-07 54.194.79.126

2020-10-07-----2020-10-07 99.80.157.211