iP or domain name lookup

xiaojiannan.duapp.com Server iP：

Current resolution：

domain resolution record：

2017-03-12-----2018-01-17 111.202.114.30

2017-08-26-----2018-01-17 111.202.114.29

2017-03-12-----2018-01-16 123.125.112.229

2017-04-13-----2018-01-16 123.125.112.228

2017-03-12-----2017-12-26 220.181.7.172

2017-03-12-----2017-12-08 111.13.101.137

2017-10-07-----2017-12-08 106.120.159.149

2017-03-12-----2017-10-18 220.181.7.171

2017-03-12-----2017-10-07 111.13.100.226

2017-03-12-----2017-09-02 111.13.100.104