iP or domain name lookup

cuitong.duapp.com Server iP：

Current resolution：

domain resolution record：

2017-08-26-----2018-01-17 123.125.112.229

2017-08-01-----2018-01-16 123.125.112.228

2017-08-26-----2018-01-16 111.202.114.29

2017-08-26-----2018-01-16 111.202.114.30

2016-09-17-----2017-12-08 111.13.101.137

2017-12-08-----2017-12-08 106.120.159.149

2016-09-17-----2017-08-29 111.13.100.104

2016-09-17-----2017-08-27 111.13.100.226

2016-09-17-----2016-09-21 220.181.7.172

2016-09-17-----2016-09-21 220.181.7.171