iP or domain name lookup

android.yrabc.com Server iP：

Current resolution：

domain resolution record：

2016-11-03-----2017-04-07 183.131.85.4

2017-04-07-----2017-04-07 50.63.202.7

2017-04-07-----2017-04-07 50.63.202.13

2017-04-07-----2017-04-07 50.63.202.30

2017-04-07-----2017-04-07 184.168.221.31

2017-04-07-----2017-04-07 184.168.221.12

2017-04-07-----2017-04-07 184.168.221.2

2017-04-07-----2017-04-07 50.63.202.3

2017-04-07-----2017-04-07 50.63.202.22

2017-04-07-----2017-04-07 184.168.221.3