iP or domain name lookup

a1.tuyain.com Server iP：

Current resolution：

domain resolution record：

2021-10-07-----2021-11-10 35.154.239.232

2021-11-09-----2021-11-09 3.6.216.45

2021-11-09-----2021-11-09 13.235.171.32

2021-09-01-----2021-10-16 52.66.179.171

2021-10-07-----2021-10-07 65.0.137.76

2021-09-01-----2021-09-10 35.154.107.234

2021-09-01-----2021-09-10 65.1.27.77

2021-09-10-----2021-09-10 35.154.227.52

2019-08-05-----2019-10-06 13.234.214.113

2019-08-05-----2019-10-06 13.126.77.42