iP or domain name lookup

update.polarisoffice.com Server iP：

Current resolution：

domain resolution record：

2022-08-10-----2022-08-10 52.9.145.186

2022-08-10-----2022-08-10 184.72.14.88

2021-01-13-----2021-01-13 54.177.201.66

2021-01-13-----2021-01-13 13.56.7.207

2019-09-03-----2020-01-09 50.18.211.36

2020-01-09-----2020-01-09 54.177.96.193

2019-09-03-----2019-09-03 52.52.152.71

2017-08-06-----2017-08-07 54.183.179.32

2017-08-06-----2017-08-06 52.52.239.252