iP or domain name lookup

demo.b2ctui.com Server iP：

Current resolution：

domain resolution record：

2018-09-08-----2019-09-14 121.43.187.52

2017-07-18-----2017-07-29 58.211.137.234

2017-07-18-----2017-07-29 59.51.81.248

2017-07-18-----2017-07-29 116.31.127.234

2017-07-29-----2017-07-29 115.231.187.234

2017-07-18-----2017-07-19 117.34.14.234

2017-07-18-----2017-07-18 101.71.56.234

2017-07-18-----2017-07-18 42.236.94.234

2017-07-18-----2017-07-18 162.159.211.5

2017-07-18-----2017-07-18 122.190.3.234