iP or domain name lookup

prortal.office.com Server iP：

Current resolution：

domain resolution record：

2024-08-06-----2024-08-06 172.67.72.218

2023-09-05-----2023-09-22 45.33.2.79

2023-09-07-----2023-09-07 96.126.123.244

2023-08-29-----2023-09-06 45.33.18.44

2023-09-06-----2023-09-06 45.33.20.235

2023-09-04-----2023-09-04 173.255.194.134

2023-09-03-----2023-09-03 45.79.19.196

2021-04-09-----2021-04-09 199.59.242.154

2020-01-08-----2020-01-08 79.124.78.105

2019-12-15-----2019-12-17 79.124.78.101