iP or domain name lookup

ol87.cn Server iP：

Current resolution：

domain resolution record：

2021-02-16-----2021-02-16 54.153.56.183

2019-10-19-----2019-10-29 142.4.99.72

2019-09-30-----2019-10-10 142.4.99.70

2019-08-23-----2019-08-23 142.4.99.66

2019-07-12-----2019-07-12 39.109.123.191

2017-11-18-----2017-12-14 117.34.14.153

2017-11-18-----2017-12-14 58.211.137.153

2017-11-18-----2017-12-14 42.236.94.153

2017-12-14-----2017-12-14 162.159.211.15

2017-12-14-----2017-12-14 125.39.174.153

2017-09-18-----2017-11-18 162.159.210.15

2017-11-18-----2017-11-18 59.51.81.229

2017-11-18-----2017-11-18 115.231.187.153

2017-09-18-----2017-09-19 58.211.137.232

2017-09-19-----2017-09-19 122.190.3.232

2017-09-18-----2017-09-18 115.231.187.232

2017-09-18-----2017-09-18 101.71.56.232