iP or domain name lookup

mail.51991.com Server iP：

Current resolution：

domain resolution record：

2022-11-25-----2024-03-19 183.2.144.108

2022-11-25-----2024-03-19 157.255.13.12

2022-11-25-----2024-03-19 183.47.114.101

2022-11-25-----2024-03-19 163.177.30.56

2022-11-25-----2024-03-19 183.2.144.113

2022-12-19-----2024-03-19 157.255.13.247

2023-08-14-----2024-03-19 120.232.67.187

2023-08-14-----2024-03-19 43.154.252.250

2022-11-25-----2023-09-12 120.241.150.114

2022-11-25-----2023-09-12 43.155.124.18

2022-12-19-----2023-09-12 120.233.18.36

2019-12-30-----2022-08-09 113.96.233.155

2019-12-30-----2022-08-09 157.255.173.155

2020-05-12-----2022-08-09 61.241.49.119

2020-07-23-----2022-08-09 120.241.186.206

2020-12-15-----2022-08-09 203.205.255.142

2022-06-17-----2022-08-09 112.53.42.200

2022-06-17-----2022-08-09 14.17.5.225

2022-06-17-----2022-08-09 157.255.218.58

2022-06-17-----2022-08-09 14.17.27.154

2022-06-17-----2022-08-09 112.60.23.181

2022-06-17-----2022-08-09 112.90.80.211

2019-12-30-----2022-07-03 59.37.96.29

2020-07-23-----2022-07-03 183.232.93.144

2019-12-30-----2020-10-28 203.205.255.212

2019-12-30-----2020-05-17 182.254.105.100