iP or domain name lookup

ok2e.com Server iP：

Current resolution：

domain resolution record：

2019-07-17-----2019-07-17 154.223.151.244

2017-09-12-----2017-09-13 162.212.181.127

2017-03-27-----2017-03-27 104.148.11.40

2017-03-05-----2017-03-18 107.179.92.104