iP or domain name lookup

chengtoo.com Server iP：

Current resolution：

domain resolution record：

2019-04-17-----2019-09-20 156.232.186.9

2018-04-19-----2018-06-10 156.237.182.78

2017-12-19-----2018-04-20 45.199.73.23

2017-09-26-----2017-10-04 123.60.210.246

2016-12-04-----2017-03-14 123.57.61.150