iP or domain name lookup

bj.crystaledu.com Server iP：

Current resolution：

domain resolution record：

2021-04-15-----2021-04-15 162.159.225.122

2021-04-15-----2021-04-15 162.159.224.122

2017-09-22-----2019-08-24 162.159.226.157

2019-04-07-----2019-08-24 58.211.137.13

2019-04-07-----2019-08-24 112.25.91.13

2019-04-07-----2019-08-24 119.188.97.13

2019-04-07-----2019-08-24 150.138.151.13

2019-07-12-----2019-08-24 183.232.53.13

2017-08-09-----2019-07-12 162.159.227.157

2019-07-12-----2019-07-12 119.147.134.13

2017-08-09-----2017-12-06 117.34.14.12

2017-08-09-----2017-12-06 183.232.53.12

2017-08-09-----2017-12-05 112.25.91.12

2017-08-09-----2017-12-05 125.39.174.12

2017-08-09-----2017-12-05 58.211.137.12

2017-09-22-----2017-12-05 115.231.187.12

2017-09-22-----2017-12-05 119.147.134.12

2017-11-08-----2017-12-05 119.188.97.12

2017-08-09-----2017-09-22 101.71.56.12

2017-08-09-----2017-08-09 220.170.186.12

2017-08-09-----2017-08-09 124.95.191.12

2017-08-09-----2017-08-09 116.31.127.12

2017-05-08-----2017-05-08 220.170.186.11

2017-05-08-----2017-05-08 61.54.47.11

2017-05-08-----2017-05-08 162.159.232.186

2017-05-08-----2017-05-08 58.211.137.11

2017-05-08-----2017-05-08 112.25.91.11

2017-05-08-----2017-05-08 111.32.136.11

2017-05-08-----2017-05-08 116.31.127.11

2017-05-08-----2017-05-08 119.188.97.11

2017-03-03-----2017-03-15 123.56.221.2