iP or domain name lookup

acg.ac Server iP：

Current resolution：

domain resolution record：

2023-06-18-----2025-08-06 45.133.238.33

2022-10-02-----2022-10-02 45.137.10.198

2022-10-02-----2022-10-02 45.154.12.100

2020-08-14-----2020-08-14 23.236.68.219

2020-08-14-----2020-08-14 45.137.10.76

2020-08-14-----2020-08-14 119.28.89.140

2020-08-14-----2020-08-14 154.209.235.42