iP or domain name lookup

mail.sdmc.edu.cn Server iP：

Current resolution：

domain resolution record：

2021-02-17-----2024-07-07 14.17.5.207

2021-02-17-----2024-07-07 112.90.80.23

2021-02-17-----2023-12-23 129.226.106.19

2021-02-17-----2023-04-20 81.71.56.226

2021-02-17-----2021-10-14 112.53.42.14

2019-03-13-----2019-12-24 183.232.94.57

2019-03-13-----2019-12-24 163.177.89.176

2019-03-13-----2019-12-24 182.254.38.92

2019-07-12-----2019-12-24 113.96.233.160

2017-08-06-----2018-01-21 112.90.77.178

2017-08-06-----2018-01-21 112.90.78.157

2017-09-04-----2018-01-21 183.3.226.105

2017-09-04-----2018-01-21 183.232.98.201

2017-08-06-----2017-08-07 120.198.201.151

2017-08-06-----2017-08-06 183.3.235.69

2017-08-06-----2017-08-06 14.17.42.118

2017-08-06-----2017-08-06 183.232.88.174