iP or domain name lookup

vrp.njtuimao.com Server iP：

Current resolution：

domain resolution record：

2017-08-07-----2017-08-07 220.181.105.184

2017-08-07-----2017-08-07 183.232.151.160

2017-08-06-----2017-08-06 42.81.4.76

2017-08-06-----2017-08-06 223.82.136.173

2017-08-06-----2017-08-06 58.218.215.172

2017-08-06-----2017-08-06 121.207.229.243

2017-08-06-----2017-08-06 122.72.35.241

2017-08-06-----2017-08-06 222.186.49.186

2017-08-06-----2017-08-06 123.129.244.4

2017-08-06-----2017-08-06 116.55.241.172

2017-08-06-----2017-08-06 124.232.157.116