iP or domain name lookup

xs99.com Server iP：

Current resolution：

domain resolution record：

2020-10-29-----2023-03-19 172.67.128.79

2021-06-12-----2023-03-19 104.21.0.215

2020-10-29-----2021-01-05 104.28.2.6

2020-10-29-----2021-01-05 104.28.3.6