iP or domain name lookup

ap.er4.xyz Server iP：

Current resolution：

domain resolution record：

2024-02-11-----2024-02-11 15.197.192.55

2023-08-01-----2023-08-01 54.183.104.156

2021-02-07-----2021-02-07 37.48.65.143

2021-02-07-----2021-02-07 162.210.196.166

2021-02-07-----2021-02-07 185.107.56.54

2021-02-07-----2021-02-07 96.47.230.68

2021-02-07-----2021-02-07 162.210.195.122

2021-02-07-----2021-02-07 5.79.68.110

2021-02-07-----2021-02-07 162.210.199.85

2021-02-07-----2021-02-07 185.107.56.194

2021-02-07-----2021-02-07 162.210.196.168

2021-02-07-----2021-02-07 37.48.65.155

2021-02-07-----2021-02-07 96.47.230.70

2021-02-07-----2021-02-07 5.79.68.109