iP or domain name lookup

sdknc.g.uc.cn Server iP：

Current resolution：

domain resolution record：

2017-09-03-----2021-06-23 157.255.239.219

2017-09-03-----2021-06-23 119.147.46.219

2019-07-13-----2021-06-23 120.241.12.145

2018-01-21-----2019-03-19 120.241.0.219

2017-01-13-----2018-01-21 153.35.88.138

2017-01-13-----2018-01-21 112.25.246.138

2017-01-13-----2018-01-21 221.228.102.138

2017-01-13-----2017-08-28 119.147.224.64

2017-01-13-----2017-08-27 120.237.63.100

2017-01-13-----2017-01-13 163.177.128.114