iP or domain name lookup

mail.sina.com Server iP：

Current resolution：

domain resolution record：

2022-07-20-----2024-03-22 49.7.36.183

2022-07-20-----2024-03-22 202.108.0.139

2022-08-08-----2024-03-22 36.51.224.14

2023-11-03-----2024-03-22 106.63.15.18

2022-07-20-----2023-07-02 183.60.95.240

2022-07-20-----2023-05-28 111.13.225.178

2019-03-15-----2022-07-11 123.126.45.14

2019-03-15-----2022-07-11 39.156.6.98

2021-07-30-----2022-07-11 49.7.36.44

2021-09-04-----2022-07-11 183.60.95.173

2021-04-09-----2021-07-30 183.60.95.213

2019-03-15-----2021-07-09 49.7.36.27

2019-09-11-----2021-03-08 183.60.95.142

2019-07-24-----2019-07-25 121.14.32.154

2019-03-15-----2019-07-12 121.14.32.168

2018-05-24-----2019-04-12 121.194.0.49

2017-02-07-----2018-05-24 180.149.138.196

2017-02-07-----2018-05-24 123.125.105.138

2017-02-07-----2018-05-24 113.108.216.17

2018-05-24-----2018-05-24 123.125.105.113

2017-02-07-----2018-03-12 123.126.56.253

2016-02-18-----2016-02-18 58.63.237.237

2016-02-18-----2016-02-18 111.13.87.157

2016-02-18-----2016-02-18 123.126.42.251

2016-02-18-----2016-02-18 180.149.136.252