iP or domain name lookup

pop3.chengmail.cn Server iP：

Current resolution：

domain resolution record：

2023-10-10-----2023-10-10 123.1.189.243

2023-10-10-----2023-10-10 156.244.244.24

2022-03-17-----2022-03-17 210.16.190.213

2022-03-17-----2022-03-17 118.244.206.155

2022-03-17-----2022-03-17 210.16.190.249

2022-03-17-----2022-03-17 210.16.190.144

2022-03-17-----2022-03-17 218.241.17.107

2022-03-17-----2022-03-17 203.135.96.149

2022-03-17-----2022-03-17 103.214.56.25

2022-03-17-----2022-03-17 218.241.17.153