iP or domain name lookup

yanzhao.bjut.edu.cn Server iP：

Current resolution：

domain resolution record：

2019-07-09-----2023-10-08 116.211.138.205

2019-10-02-----2023-10-08 27.221.108.52

2022-08-07-----2022-08-07 122.9.167.87

2022-01-29-----2022-04-26 27.221.108.54

2019-10-02-----2021-08-25 27.221.108.53

2021-08-25-----2021-08-25 122.9.139.139

2021-08-25-----2021-08-25 116.63.182.174

2021-08-25-----2021-08-25 139.9.237.251

2021-08-25-----2021-08-25 116.63.133.176

2021-08-25-----2021-08-25 116.63.189.134

2019-07-09-----2019-10-02 182.140.213.106

2019-07-09-----2019-10-02 180.96.16.253

2019-08-19-----2019-10-02 119.188.95.115

2019-08-19-----2019-10-02 180.96.16.244

2019-10-02-----2019-10-02 116.211.138.208

2019-07-09-----2019-08-22 183.61.189.170