iP or domain name lookup

1111.51mypc.cn Server iP：

Current resolution：

domain resolution record：

2017-09-13-----2022-03-18 61.142.176.23

2018-10-04-----2018-10-04 221.179.46.190

2017-08-02-----2017-08-02 113.245.187.173

2017-08-01-----2017-08-01 113.245.191.204

2017-05-08-----2017-05-08 113.245.185.146

2017-02-07-----2017-02-07 175.3.173.130

2017-02-06-----2017-02-06 58.46.152.218