iP or domain name lookup

ls.usaman.cn Server iP：

Current resolution：

domain resolution record：

2019-08-22-----2020-01-11 154.93.69.87

2019-07-09-----2019-07-10 52.79.208.116

2017-06-01-----2017-06-01 174.139.192.219

2017-05-15-----2017-05-31 98.126.174.116

2017-05-15-----2017-05-31 98.126.164.77

2017-05-15-----2017-05-31 174.139.17.12

2017-05-15-----2017-05-31 174.139.57.148

2017-05-31-----2017-05-31 174.139.141.20

2017-05-31-----2017-05-31 192.74.240.18

2017-05-31-----2017-05-31 98.126.243.18

2017-05-31-----2017-05-31 98.126.104.108

2017-05-31-----2017-05-31 23.234.34.48

2017-05-15-----2017-05-15 110.34.135.99

2017-05-15-----2017-05-15 98.126.43.59

2017-05-15-----2017-05-15 174.139.192.59

2017-05-15-----2017-05-15 174.139.201.18

2017-05-15-----2017-05-15 174.139.35.204