iP or domain name lookup

bg6ctt.synology.me Server iP：

Current resolution：

domain resolution record：

2022-05-12-----2022-05-12 180.171.161.64

2021-10-19-----2021-10-19 116.233.181.144

2021-07-30-----2021-07-30 180.171.162.215

2021-07-23-----2021-07-23 180.171.161.130

2021-02-19-----2021-02-19 116.233.176.205

2020-12-06-----2020-12-15 116.233.180.168

2020-12-15-----2020-12-15 52.128.23.153

2020-03-16-----2020-03-16 116.233.221.156

2019-09-30-----2019-11-26 116.233.222.79

2019-07-23-----2019-08-02 116.233.178.192

2019-06-02-----2019-06-02 101.228.28.139