iP or domain name lookup

21sis.com Server iP：

Current resolution：

domain resolution record：

2023-12-05-----2024-05-02 72.167.46.176

2023-12-05-----2023-12-05 156.251.239.187

2023-02-28-----2023-10-17 68.178.201.82

2023-09-11-----2023-09-11 156.234.127.104

2023-04-24-----2023-05-26 156.234.127.14

2023-01-31-----2023-01-31 68.178.207.171

2022-10-02-----2022-10-28 45.66.158.48

2020-02-23-----2020-02-23 42.51.195.221

2020-02-23-----2020-02-23 222.186.57.184

2019-12-22-----2020-01-21 103.214.165.182

2019-12-22-----2020-01-21 103.214.165.180

2020-01-21-----2020-01-21 45.43.37.27

2020-01-21-----2020-01-21 152.32.144.213

2020-01-21-----2020-01-21 154.196.63.11

2019-12-22-----2020-01-12 172.247.253.137

2019-12-22-----2020-01-12 172.247.253.156

2019-12-22-----2020-01-12 103.214.165.181

2019-12-22-----2020-01-12 172.247.253.158

2019-12-22-----2020-01-12 172.247.253.157

2019-12-22-----2020-01-12 172.247.253.138

2019-12-22-----2020-01-12 172.247.253.136

2019-06-19-----2019-09-20 147.135.165.57