iP or domain name lookup

docdown.cnki.net Server iP：

Current resolution：

domain resolution record：

2021-10-15-----2025-11-03 115.31.65.33

2022-03-29-----2025-11-03 121.194.4.230

2023-04-01-----2025-11-03 115.31.65.23

2023-11-07-----2025-11-03 27.222.22.134

2024-12-01-----2024-12-10 43.159.104.130

2024-12-03-----2024-12-03 43.174.68.116

2024-12-02-----2024-12-02 43.175.237.12

2023-06-30-----2023-10-18 115.31.65.43

2023-07-25-----2023-07-25 150.138.158.4

2021-10-15-----2023-06-23 150.138.141.12

2021-11-19-----2021-11-19 121.194.4.133