iP or domain name lookup

calendly.com Server iP：

Current resolution：

domain resolution record：

2023-08-23-----2024-01-02 172.64.146.81

2023-08-23-----2024-01-02 104.18.41.175

2023-03-22-----2023-08-23 172.66.43.26

2023-03-22-----2023-08-23 172.66.40.230

2022-04-03-----2022-04-03 172.66.42.216

2022-04-03-----2022-04-03 172.66.41.40

2019-09-09-----2021-06-15 104.20.248.116

2019-09-09-----2021-06-15 104.20.247.116

2017-09-15-----2017-09-16 23.21.252.101

2017-09-15-----2017-09-16 50.16.208.188

2017-09-15-----2017-09-15 54.243.195.195