iP or domain name lookup

cn.ports.ubuntu.com Server iP：

Current resolution：

domain resolution record：

2022-04-10-----2023-09-06 185.125.190.39

2022-04-10-----2023-09-06 185.125.190.36

2021-05-16-----2021-10-09 91.189.91.38

2021-05-16-----2021-10-09 91.189.91.39

2020-09-18-----2021-04-06 91.189.88.142

2020-09-18-----2021-04-06 91.189.88.152

2019-03-08-----2020-09-07 91.189.88.150

2017-06-16-----2017-06-16 121.46.9.143

2016-11-20-----2017-01-26 106.48.12.37

2016-11-20-----2017-01-26 106.48.14.50

2016-11-20-----2017-01-26 106.48.14.34

2016-11-20-----2017-01-26 180.210.232.11

2017-01-13-----2017-01-26 180.210.230.58

2017-01-13-----2017-01-26 106.48.13.57

2017-01-13-----2017-01-26 180.210.230.27

2017-01-26-----2017-01-26 106.48.13.58

2017-01-26-----2017-01-26 106.48.56.227

2017-01-26-----2017-01-26 106.48.56.226

2016-11-21-----2017-01-14 106.48.12.38

2016-11-20-----2017-01-13 106.48.14.4

2017-01-13-----2017-01-13 106.49.97.43

2016-11-21-----2016-11-21 192.254.95.19

2016-11-20-----2016-11-20 23.236.126.42

2016-11-20-----2016-11-20 106.48.12.41

2016-11-20-----2016-11-20 180.210.232.198

2016-11-20-----2016-11-20 106.49.97.37