iP or domain name lookup

cloud-u.duba.net Server iP：

Current resolution：

domain resolution record：

2019-07-17-----2023-11-05 110.43.89.21

2019-07-27-----2023-11-05 120.52.183.140

2017-08-31-----2019-12-06 120.92.32.175

2017-08-31-----2018-01-18 122.193.207.62

2017-08-31-----2018-01-18 221.228.204.24