iP or domain name lookup

doc.xuehai.net Server iP：

Current resolution：

domain resolution record：

2020-01-19-----2024-03-11 150.109.52.44

2019-07-11-----2019-12-26 47.52.254.10

2019-03-09-----2019-06-01 47.244.25.248

2018-04-09-----2018-04-20 103.35.172.230

2017-11-05-----2017-11-26 47.52.46.24

2017-11-26-----2017-11-26 119.28.190.74

2016-06-23-----2017-04-19 47.90.11.52

2016-02-24-----2016-02-24 122.10.118.125

2016-02-24-----2016-02-24 118.193.152.83

2015-12-31-----2015-12-31 108.61.180.66