iP or domain name lookup

preliminary.istio.io Server iP：

Current resolution：

domain resolution record：

2021-12-15-----2021-12-15 206.189.46.168

2021-12-15-----2021-12-15 178.128.126.116

2021-12-15-----2021-12-15 178.128.93.124

2021-12-15-----2021-12-15 54.255.56.197

2021-12-15-----2021-12-15 104.248.158.121

2021-12-15-----2021-12-15 167.99.78.230

2021-12-15-----2021-12-15 18.139.201.98

2021-12-15-----2021-12-15 52.220.244.242

2021-12-15-----2021-12-15 18.140.226.100

2021-12-15-----2021-12-15 178.128.124.245