iP or domain name lookup

blog.udemy.com Server iP：

Current resolution：

domain resolution record：

2024-06-16-----2024-06-16 104.16.143.237

2024-06-16-----2024-06-16 104.16.142.237

2023-09-21-----2024-02-14 104.18.106.64

2023-09-21-----2024-02-14 104.18.107.64

2023-04-30-----2023-06-16 104.16.226.91

2023-04-30-----2023-06-16 104.18.160.90

2022-02-06-----2023-01-23 104.16.66.85

2022-02-06-----2023-01-23 104.16.65.85

2018-04-02-----2020-06-14 151.101.229.168

2019-07-16-----2020-06-14 151.101.109.168

2019-07-16-----2020-06-14 151.101.77.168

2019-07-16-----2020-04-30 151.101.41.168

2020-04-30-----2020-04-30 151.101.9.168

2020-04-30-----2020-04-30 151.101.113.168

2019-12-03-----2019-12-03 151.101.197.168

2018-04-02-----2019-07-17 151.101.25.168

2018-04-02-----2019-07-16 151.101.65.168

2018-04-02-----2018-04-02 151.101.1.168

2018-04-02-----2018-04-02 151.101.73.168