iP or domain name lookup

bb.imperial.ac.uk Server iP：

Current resolution：

domain resolution record：

2024-01-14-----2024-02-07 35.157.76.35

2024-02-07-----2024-02-07 3.66.95.39

2024-01-14-----2024-01-14 3.66.19.99

2023-12-20-----2023-12-20 3.65.173.43

2023-12-20-----2023-12-20 52.29.40.250

2023-12-12-----2023-12-13 3.66.177.13

2023-12-13-----2023-12-13 3.65.230.169

2023-12-12-----2023-12-12 52.57.11.10

2023-06-08-----2023-06-08 18.195.82.169

2023-06-08-----2023-06-08 52.28.48.37

2018-04-25-----2021-05-31 46.183.240.113