iP or domain name lookup

mycase.cloudapps.cisco.com Server iP：

Current resolution：

domain resolution record：

2022-10-19-----2023-11-09 72.163.15.141

2023-02-10-----2023-04-04 173.36.127.17

2021-10-31-----2021-10-31 72.163.15.140

2021-06-08-----2021-06-08 173.36.127.16

2019-12-06-----2020-09-07 72.163.10.124

2019-04-08-----2019-07-03 173.36.104.11

2019-04-08-----2019-07-02 173.36.104.10

2019-04-08-----2019-07-02 173.37.216.10

2019-04-08-----2019-07-02 173.37.216.11