iP or domain name lookup

921.cn Server iP：

Current resolution：

domain resolution record：

2020-11-21-----2020-11-21 149.28.22.20

2019-07-05-----2019-11-12 203.78.142.55

2019-07-06-----2019-07-06 148.153.36.251

2019-06-03-----2019-06-03 148.153.36.51

2018-01-25-----2018-01-25 203.78.142.12

2017-01-09-----2017-07-04 103.241.230.131

2017-01-09-----2017-07-04 103.241.230.132

2017-03-18-----2017-07-04 103.241.230.138

2017-04-18-----2017-07-04 103.241.230.134

2017-03-18-----2017-07-01 103.241.230.137

2017-03-18-----2017-06-30 103.241.230.139

2017-01-09-----2017-05-10 103.241.230.136

2017-03-18-----2017-05-10 103.241.230.135

2017-03-25-----2017-03-31 103.241.230.140

2017-01-09-----2017-01-26 103.241.230.133