iP or domain name lookup

pt80.net Server iP：

Current resolution：

domain resolution record：

2020-07-28-----2020-07-28 49.51.79.254

2020-05-20-----2020-05-20 119.28.48.236

2017-03-29-----2019-12-07 49.51.10.192

2017-08-12-----2018-05-02 45.113.70.122

2017-07-04-----2017-12-25 49.51.8.200

2017-04-18-----2017-04-18 49.51.11.89

2016-12-14-----2016-12-16 119.28.48.227

2016-12-14-----2016-12-14 119.28.48.228

2016-11-24-----2016-12-05 119.28.48.229