iP or domain name lookup

btswap.com Server iP：

Current resolution：

domain resolution record：

2021-02-14-----2022-06-03 172.67.139.199

2021-02-14-----2022-06-03 104.21.8.164

2020-08-30-----2021-01-02 104.22.9.155

2020-08-30-----2021-01-02 104.22.8.155

2020-08-30-----2021-01-02 172.67.27.63

2020-08-28-----2020-08-30 104.27.187.203

2020-08-28-----2020-08-28 104.27.186.203

2020-08-28-----2020-08-28 172.67.171.230