iP or domain name lookup

result.paycenter.u51.com Server iP：

Current resolution：

domain resolution record：

2019-07-12-----2023-03-03 115.238.29.11

2020-06-11-----2023-03-03 117.148.143.80

2017-12-06-----2019-10-10 101.71.54.151

2017-12-06-----2019-10-10 117.148.143.71

2019-10-10-----2019-10-10 114.55.16.141

2017-12-06-----2017-12-06 115.236.23.40

2016-12-13-----2017-06-05 183.129.178.142

2016-12-13-----2017-06-05 43.254.52.7

2017-06-05-----2017-06-05 117.148.143.68

2016-12-13-----2016-12-14 121.52.235.6

2016-12-13-----2016-12-13 112.13.166.210