iP or domain name lookup

i.mooc.nbdlib.cn Server iP：

Current resolution：

domain resolution record：

2022-03-05-----2024-03-15 140.210.88.210

2022-03-05-----2024-03-15 140.210.88.209

2024-03-15-----2024-03-15 45.113.20.16

2024-03-15-----2024-03-15 45.113.20.18

2022-03-05-----2023-03-29 140.210.88.206

2022-03-05-----2023-03-29 140.210.88.211

2022-03-05-----2023-03-29 140.210.88.212

2022-03-05-----2023-03-29 140.210.88.208

2022-03-05-----2023-03-29 140.210.88.207

2023-03-29-----2023-03-29 140.210.88.24

2023-03-29-----2023-03-29 140.210.88.23

2022-03-05-----2022-03-05 140.210.88.204

2022-03-05-----2022-03-05 140.210.88.203