iP or domain name lookup

1.pt.pool.ntp.org Server iP：

Current resolution：

domain resolution record：

2020-06-17-----2024-03-01 193.136.152.71

2021-04-01-----2024-03-01 91.209.16.78

2024-03-01-----2024-03-01 162.159.200.1

2023-08-17-----2023-08-17 109.48.58.22

2023-08-17-----2023-08-17 162.159.200.123

2022-11-06-----2022-11-06 85.138.122.254

2022-11-06-----2022-11-06 135.125.157.35

2022-11-06-----2022-11-06 51.89.13.34

2021-04-01-----2022-10-01 178.33.203.107

2022-10-01-----2022-10-01 51.77.89.236

2020-06-17-----2022-01-31 194.117.47.44

2021-03-08-----2022-01-31 178.33.203.115

2021-07-06-----2022-01-31 193.136.152.72

2021-07-06-----2022-01-31 193.136.164.4

2020-06-17-----2021-10-31 88.157.128.22

2020-06-17-----2021-10-31 195.22.17.7

2020-06-17-----2021-05-05 5.135.59.152

2020-06-17-----2021-03-08 194.117.47.42

2020-06-17-----2020-06-17 80.172.224.24