iP or domain name lookup

www.51using.com Server iP：

Current resolution：

domain resolution record：

2020-02-06-----2023-04-07 47.106.140.237

2019-05-30-----2019-10-01 120.133.3.41

2018-07-29-----2018-12-22 120.133.3.22

2018-04-19-----2018-04-19 120.133.5.59

2017-07-19-----2017-07-19 120.133.3.197

2017-06-27-----2017-06-27 122.190.3.231

2017-06-26-----2017-06-26 116.31.127.231

2017-06-26-----2017-06-26 125.39.174.231

2017-06-26-----2017-06-26 59.51.81.248

2017-06-26-----2017-06-26 117.34.14.231

2017-06-26-----2017-06-26 58.211.137.231

2017-06-26-----2017-06-26 42.236.94.231

2017-06-26-----2017-06-26 162.159.211.24