iP or domain name lookup

lib.tjrac.edu.cn Server iP：

Current resolution：

domain resolution record：

2019-07-16-----2024-03-07 121.193.129.2

2017-09-16-----2019-12-21 162.159.211.32

2017-12-14-----2019-12-21 162.159.210.32

2019-12-21-----2019-12-21 117.34.14.240

2019-12-21-----2019-12-21 42.236.94.240

2019-12-21-----2019-12-21 58.211.137.240

2017-09-16-----2019-10-09 58.211.137.239

2017-09-16-----2019-10-09 117.34.14.239

2017-09-16-----2019-10-09 125.39.174.239

2017-12-14-----2019-10-09 42.236.94.239

2017-09-16-----2019-07-17 122.190.3.239

2017-09-16-----2018-01-21 101.71.56.239

2018-01-21-----2018-01-21 59.51.81.250

2017-09-16-----2017-09-16 115.231.187.239