iP or domain name lookup

mail.ycu.edu.cn Server iP：

Current resolution：

domain resolution record：

2021-08-30-----2024-05-17 112.90.80.23

2021-08-30-----2024-05-17 14.17.5.207

2021-08-30-----2024-05-17 129.226.106.19

2021-08-30-----2023-02-07 81.71.56.226

2021-08-30-----2022-08-29 112.53.42.14

2020-02-20-----2020-02-20 113.96.233.160

2020-02-20-----2020-02-20 182.254.38.92

2020-02-20-----2020-02-20 183.232.94.57

2020-02-20-----2020-02-20 163.177.89.176

2017-02-10-----2019-07-15 202.207.232.4