iP or domain name lookup

cnki6.cnkipmlc.checkpass.net Server iP：

Current resolution：

domain resolution record：

2019-07-01-----2023-07-01 47.92.244.75

2019-07-01-----2023-07-01 39.98.185.250

2022-05-12-----2022-05-12 121.89.233.73

2022-05-12-----2022-05-12 8.142.143.21

2020-05-07-----2020-05-25 39.100.207.193

2020-05-20-----2020-05-25 39.98.208.201

2019-03-15-----2019-05-27 112.124.53.233

2019-05-06-----2019-05-27 120.27.162.72