iP or domain name lookup

dy.yangbt.com Server iP：

Current resolution：

domain resolution record：

2019-08-14-----2019-11-06 47.240.11.25

2019-06-27-----2019-06-27 117.50.47.72

2019-04-10-----2019-04-10 202.162.108.142

2019-04-10-----2019-04-10 117.23.61.185

2017-09-01-----2017-09-01 121.29.54.100

2017-09-01-----2017-09-01 42.56.76.104

2017-09-01-----2017-09-01 153.37.238.173

2017-09-01-----2017-09-01 119.147.33.102

2017-09-01-----2017-09-01 58.216.107.101

2017-09-01-----2017-09-01 111.1.57.101

2017-09-01-----2017-09-01 1.31.173.43

2017-09-01-----2017-09-01 106.117.249.107