iP or domain name lookup

mail.hainnu.edu.cn Server iP：

Current resolution：

domain resolution record：

2022-11-13-----2025-12-21 129.226.106.19

2022-11-13-----2025-10-10 112.90.80.23

2022-11-13-----2025-10-10 81.71.56.226

2022-11-13-----2025-10-10 14.17.5.207

2018-12-22-----2021-11-03 123.58.177.239

2021-11-03-----2021-11-03 103.129.255.237

2019-10-01-----2019-10-01 95.216.161.60

2017-12-14-----2018-08-09 220.181.97.121

2017-12-14-----2018-08-09 123.125.50.182

2017-12-14-----2018-08-09 220.181.97.122

2017-12-14-----2018-08-09 123.125.50.181