iP or domain name lookup

fastapi.net Server iP：

Current resolution：

domain resolution record：

2023-03-08-----2023-05-11 172.64.128.21

2023-03-08-----2023-05-11 172.64.129.21

2023-01-15-----2023-03-27 104.21.45.47

2023-01-15-----2023-03-21 172.67.209.179

2023-03-14-----2023-03-14 172.64.193.2

2023-03-14-----2023-03-14 172.64.192.2

2023-02-23-----2023-03-08 172.64.173.15

2023-03-02-----2023-03-07 172.64.172.15

2023-02-14-----2023-02-14 172.64.103.14

2022-10-18-----2023-01-15 47.91.170.222

2019-04-26-----2020-12-02 39.106.253.139

2016-11-23-----2017-12-11 42.62.98.98