iP or domain name lookup

nns.iphonesp.guru Server iP：

Current resolution：

domain resolution record：

2021-09-08-----2021-11-11 154.3.7.126

2021-09-11-----2021-11-11 154.17.4.128

2021-11-11-----2021-11-11 38.143.0.98

2021-09-08-----2021-10-04 64.64.230.247

2021-09-08-----2021-10-04 154.17.7.38

2021-10-04-----2021-10-04 104.233.237.28

2021-09-08-----2021-09-24 38.106.20.118

2021-09-08-----2021-09-24 173.242.123.241

2021-09-19-----2021-09-24 216.24.182.182

2021-09-08-----2021-09-19 38.143.0.15

2021-09-08-----2021-09-13 154.17.0.192

2021-09-12-----2021-09-12 172.67.163.232