iP or domain name lookup

sfa666.duapp.com Server iP：

Current resolution：

domain resolution record：

2017-10-19-----2018-01-17 123.125.112.228

2017-10-19-----2018-01-17 111.202.114.29

2017-12-08-----2018-01-16 123.125.112.229

2018-01-16-----2018-01-16 111.202.114.30

2017-10-19-----2017-12-08 220.181.7.172

2017-10-19-----2017-12-08 106.120.159.149

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

2017-10-19-----2017-10-19 220.181.7.171