iP or domain name lookup

adp.cnki.net Server iP：

Current resolution：

domain resolution record：

2020-12-01-----2020-12-01 69.172.201.208

2017-08-06-----2020-05-09 150.138.158.3

2020-05-09-----2020-05-09 203.81.18.59

2020-01-08-----2020-01-08 103.227.81.44

2019-01-11-----2019-07-27 103.227.81.55

2017-08-06-----2018-05-29 119.167.209.162