iP or domain name lookup

exam.jxeduyun.com Server iP：

Current resolution：

domain resolution record：

2017-11-27-----2022-03-20 118.212.134.140

2017-11-27-----2022-02-22 223.84.153.160

2017-11-27-----2020-06-29 59.63.178.60

2018-09-29-----2018-11-21 220.177.255.170

2016-12-07-----2016-12-08 59.55.141.117

2016-12-07-----2016-12-07 117.169.35.44