iP or domain name lookup

protocol.sinaapp.com Server iP：

Current resolution：

domain resolution record：

2017-05-19-----2019-10-09 220.181.136.41

2017-08-28-----2018-02-04 202.108.35.250

2017-08-28-----2018-02-04 202.108.35.235

2017-08-26-----2017-08-28 202.108.35.194

2017-08-26-----2017-08-28 202.108.35.237

2017-05-19-----2017-06-16 202.108.35.224

2017-05-19-----2017-06-16 202.108.35.225

2017-06-16-----2017-06-16 202.108.35.226

2017-06-16-----2017-06-16 220.181.136.30

2017-05-19-----2017-05-19 220.181.136.27