iP or domain name lookup

cdn.ipstu.com Server iP：

Current resolution：

domain resolution record：

2017-09-07-----2017-09-07 122.227.164.191

2017-09-07-----2017-09-07 27.221.30.44

2017-09-07-----2017-09-07 59.46.4.210

2017-09-07-----2017-09-07 171.111.154.209

2017-09-07-----2017-09-07 112.5.251.18

2017-09-07-----2017-09-07 42.81.4.45

2017-09-07-----2017-09-07 220.181.105.241