iP or domain name lookup

921021.com Server iP：

Current resolution：

domain resolution record：

2019-08-27-----2024-05-02 116.255.186.77

2023-02-10-----2024-05-02 211.149.240.24

2019-06-11-----2021-07-16 118.123.18.220

2017-01-26-----2017-03-03 47.90.54.20

2016-12-03-----2016-12-05 118.193.139.48