iP or domain name lookup

720app.net Server iP：

Current resolution：

domain resolution record：

2019-12-12-----2019-12-15 18.215.128.143

2019-12-12-----2019-12-15 52.4.209.250

2019-12-12-----2019-12-12 18.213.250.117

2019-05-13-----2019-10-09 35.244.209.233

2018-12-15-----2018-12-18 35.244.230.236

2017-07-12-----2017-07-13 104.31.73.169

2017-07-12-----2017-07-12 104.31.72.169