iP or domain name lookup

co2.cnki.net Server iP：

Current resolution：

domain resolution record：

2023-08-25-----2024-10-09 121.194.4.248

2023-09-15-----2024-10-09 103.244.235.53

2023-11-28-----2024-10-09 121.194.4.3

2023-09-09-----2023-09-12 27.128.217.228

2023-09-12-----2023-09-12 121.194.4.113

2022-04-01-----2023-09-09 27.128.217.220

2023-04-25-----2023-04-25 27.128.217.238

2023-04-02-----2023-04-24 115.31.65.33

2022-04-12-----2023-02-02 203.81.18.44

2021-10-22-----2022-05-13 103.52.172.68