iP or domain name lookup

tsinghua.netpas.cn Server iP：

Current resolution：

domain resolution record：

2017-03-14-----2026-02-03 54.76.135.1

2017-03-14-----2026-02-03 77.4.7.92

2019-06-01-----2026-02-03 188.5.4.96

2019-06-03-----2026-02-03 118.5.49.6

2019-07-06-----2026-02-03 189.163.17.5

2019-07-07-----2026-02-03 23.89.5.60

2026-02-03-----2026-02-03 249.129.46.48

2019-07-21-----2025-08-04 49.2.123.56

2025-08-04-----2025-08-04 54.153.56.183

2017-03-14-----2019-08-01 197.4.4.12

2019-07-07-----2019-07-07 253.157.14.165

2017-03-14-----2017-03-15 106.38.222.187

2017-03-14-----2017-03-15 36.110.141.66