iP or domain name lookup

qhpc.com Server iP：

Current resolution：

domain resolution record：

2019-07-09-----2021-01-02 47.91.169.15

2019-04-28-----2019-04-30 47.52.135.116

2017-11-26-----2017-12-16 47.52.175.139

2017-01-29-----2017-07-13 47.89.58.32

2016-12-21-----2017-01-03 185.53.179.29

2016-12-21-----2017-01-02 52.198.75.252