iP or domain name lookup

oilc3689.cnvpn.org Server iP：

Current resolution：

domain resolution record：

2021-10-10-----2021-10-11 172.19.56.24

2021-01-20-----2021-01-20 172.19.37.225

2021-01-08-----2021-01-08 172.19.61.254

2021-01-07-----2021-01-07 172.19.225.35

2020-08-22-----2020-08-22 172.19.202.244

2020-08-19-----2020-08-19 172.19.223.41

2019-12-10-----2019-12-10 172.19.141.61

2019-09-03-----2019-09-04 172.19.72.183

2019-03-28-----2019-03-28 172.19.5.125