iP or domain name lookup

hk.ss-now.com Server iP：

Current resolution：

domain resolution record：

2017-09-25-----2017-10-07 47.91.253.124

2017-06-23-----2017-09-17 47.91.157.116

2017-06-11-----2017-06-11 47.52.105.182

2017-04-19-----2017-05-20 47.52.65.166

2017-03-20-----2017-04-13 47.91.149.166