iP or domain name lookup

class.imooc.com Server iP：

Current resolution：

domain resolution record：

2017-08-07-----2022-10-08 117.121.101.41

2017-08-07-----2022-10-08 117.121.101.40

2020-01-12-----2022-10-08 117.121.101.134

2020-01-12-----2022-10-08 117.121.101.144

2022-06-07-----2022-10-08 120.133.51.65

2022-07-29-----2022-10-08 120.133.51.67

2022-07-29-----2022-10-08 120.133.51.68

2020-01-12-----2020-03-05 115.182.41.103

2020-01-12-----2020-03-05 115.182.41.163

2017-08-07-----2020-01-22 115.182.41.180