iP or domain name lookup

www.rsis.edu.sg Server iP：

Current resolution：

domain resolution record：

2025-10-27-----2025-10-27 104.20.22.143

2025-10-27-----2025-10-27 172.66.161.172

2022-10-04-----2023-02-24 104.22.45.136

2022-10-04-----2023-02-24 172.67.42.51

2022-10-04-----2023-02-24 104.22.44.136

2018-05-01-----2018-05-02 104.20.77.49

2018-05-01-----2018-05-02 104.20.56.49