iP or domain name lookup

c.yunva.com Server iP：

Current resolution：

domain resolution record：

2019-06-13-----2019-10-09 183.131.175.193

2017-07-03-----2019-06-13 47.90.111.136

2017-07-03-----2017-07-04 101.37.136.228

2017-07-03-----2017-07-03 101.37.104.167

2017-07-03-----2017-07-03 47.90.111.250

2017-07-03-----2017-07-03 101.37.136.227