iP or domain name lookup

s.renren.com Server iP：

Current resolution：

domain resolution record：

2017-09-01-----2019-11-26 120.133.2.241

2017-09-01-----2019-11-26 120.133.2.243

2017-09-01-----2019-10-17 120.133.2.242

2017-09-01-----2018-01-18 103.235.252.231

2017-09-05-----2018-01-18 103.235.252.233

2017-09-04-----2017-12-12 103.235.252.212

2017-09-05-----2017-09-05 103.235.252.213

2017-09-01-----2017-09-04 103.235.252.211

2017-09-01-----2017-09-04 103.235.252.232