iP or domain name lookup

url123.duapp.com Server iP：

Current resolution：

domain resolution record：

2018-04-06-----2018-04-06 123.125.115.139

2018-04-06-----2018-04-06 180.149.144.28

2017-11-13-----2018-01-23 123.125.112.229

2017-11-13-----2018-01-23 111.202.114.29

2017-12-09-----2018-01-23 111.202.114.30

2017-12-09-----2018-01-23 123.125.112.228

2017-11-13-----2017-12-09 111.13.101.137

2017-11-13-----2017-12-09 220.181.7.172

2017-12-09-----2017-12-09 106.120.159.149