iP or domain name lookup

chunlin.duapp.com Server iP：

Current resolution：

domain resolution record：

2016-11-26-----2018-01-17 123.125.112.229

2016-11-26-----2018-01-17 111.202.114.30

2016-11-26-----2018-01-16 111.202.114.29

2016-11-26-----2018-01-16 123.125.112.228

2016-11-26-----2017-12-08 106.120.159.149

2017-02-06-----2017-12-08 220.181.7.172

2017-02-06-----2017-12-08 111.13.101.137

2017-02-06-----2017-09-03 111.13.100.104

2016-11-26-----2017-08-27 111.13.100.226

2017-02-06-----2017-02-06 220.181.7.171