iP or domain name lookup

fk.91nkyy.com Server iP：

Current resolution：

domain resolution record：

2021-06-14-----2021-06-14 121.5.43.167

2019-10-02-----2020-09-07 182.254.151.88

2019-02-01-----2019-07-28 115.159.90.233

2018-07-13-----2018-07-13 123.206.218.124

2017-10-20-----2017-10-20 183.60.233.192

2017-06-09-----2017-06-09 218.6.173.116

2017-05-09-----2017-05-18 218.6.173.112