iP or domain name lookup

mail.tit.edu.cn Server iP：

Current resolution：

domain resolution record：

2021-01-15-----2023-09-12 112.90.80.23

2021-01-15-----2023-09-12 129.226.106.19

2021-01-15-----2023-03-24 81.71.56.226

2021-01-15-----2023-03-24 14.17.5.207

2021-01-15-----2022-04-26 112.53.42.14

2020-06-03-----2021-01-02 163.177.89.176

2020-06-03-----2021-01-02 121.51.176.76

2020-06-03-----2021-01-02 113.96.233.160

2020-06-03-----2021-01-02 183.232.94.57