iP or domain name lookup

bfs.ri-so.cn Server iP：

Current resolution：

domain resolution record：

2020-11-02-----2020-11-02 54.153.56.183

2019-08-01-----2019-08-01 47.254.19.2

2019-07-02-----2019-07-02 78.142.29.210

2017-11-22-----2017-11-22 47.100.103.185

2017-10-26-----2017-10-27 183.131.214.229

2017-10-26-----2017-10-27 59.56.19.119

2017-09-30-----2017-10-01 183.131.214.162

2017-09-30-----2017-09-30 59.56.19.101

2017-09-30-----2017-09-30 103.36.210.104

2017-09-22-----2017-09-22 59.56.19.50

2017-09-22-----2017-09-22 59.56.19.17