iP or domain name lookup

oa.luobukeji.com Server iP：

Current resolution：

domain resolution record：

2017-10-30-----2019-08-18 118.31.42.40

2017-10-30-----2017-10-30 183.128.236.111

2017-10-30-----2017-10-30 114.55.28.212

2017-10-01-----2017-10-04 115.206.57.253

2017-06-26-----2017-06-26 115.206.63.67

2016-12-16-----2016-12-17 115.204.166.75