iP or domain name lookup

ruifei.org Server iP：

Current resolution：

domain resolution record：

2019-08-26-----2019-10-12 23.23.86.44

2017-04-24-----2017-06-02 180.137.20.89

2017-04-24-----2017-04-24 180.137.21.24

2017-04-22-----2017-04-22 180.137.1.253

2017-04-22-----2017-04-22 222.217.246.67

2016-11-17-----2016-12-25 180.137.20.223

2016-11-16-----2016-11-17 180.137.20.237

2016-11-16-----2016-11-16 222.217.246.159

2016-11-16-----2016-11-16 222.217.247.175