iP or domain name lookup

mail.dlu.edu.cn Server iP：

Current resolution：

domain resolution record：

2022-05-09-----2023-09-13 112.90.80.23

2022-05-09-----2023-09-13 129.226.106.19

2022-05-09-----2022-12-29 14.17.5.207

2022-05-09-----2022-12-29 81.71.56.226

2022-05-09-----2022-05-30 112.53.42.14

2019-09-13-----2020-11-05 183.232.94.57

2019-09-13-----2020-11-05 113.96.233.160

2019-09-13-----2020-11-05 163.177.89.176

2020-05-27-----2020-11-05 121.51.176.76

2019-09-13-----2020-04-16 182.254.38.92