iP or domain name lookup

cnstrad.com Server iP：

Current resolution：

domain resolution record：

2019-08-24-----2023-08-20 121.63.252.172

2018-09-12-----2018-09-12 221.179.46.190

2017-12-04-----2018-02-01 120.52.19.91

2018-02-01-----2018-02-01 123.6.13.41

2017-12-04-----2017-12-04 61.160.224.167

2017-04-01-----2017-04-01 122.190.3.235

2017-04-01-----2017-04-01 58.211.137.235

2017-04-01-----2017-04-01 119.167.246.250

2017-04-01-----2017-04-01 42.236.94.250

2017-04-01-----2017-04-01 116.31.127.235

2017-04-01-----2017-04-01 117.34.14.235

2017-04-01-----2017-04-01 162.159.211.25

2017-02-10-----2017-02-10 58.211.137.244

2017-02-10-----2017-02-10 42.236.94.252

2017-02-10-----2017-02-10 117.34.14.244

2017-02-10-----2017-02-10 125.39.174.244

2017-02-10-----2017-02-10 162.159.210.25