iP or domain name lookup

englishtest.duolingo.com Server iP：

Current resolution：

domain resolution record：

2024-05-18-----2024-05-23 52.6.73.119

2024-05-23-----2024-05-23 44.197.88.75

2024-05-18-----2024-05-21 3.214.230.149

2024-05-21-----2024-05-21 3.233.111.194

2024-05-21-----2024-05-21 52.7.29.200

2024-05-18-----2024-05-18 44.215.14.188

2023-05-15-----2023-05-15 50.16.75.248

2023-05-15-----2023-05-15 35.169.122.103

2023-05-15-----2023-05-15 52.0.250.20

2023-03-04-----2023-04-02 3.210.134.26

2023-04-01-----2023-04-02 44.208.233.23

2023-04-01-----2023-04-02 34.230.99.21

2023-04-01-----2023-04-02 35.171.255.91

2023-03-04-----2023-03-04 52.5.165.72

2023-03-04-----2023-03-04 44.208.8.45

2023-03-04-----2023-03-04 34.205.222.163

2023-02-19-----2023-02-19 3.218.52.34

2023-02-19-----2023-02-19 44.199.109.130

2023-02-19-----2023-02-19 54.82.157.63

2022-02-17-----2022-02-17 54.157.240.80

2022-02-17-----2022-02-17 52.204.44.28

2022-02-17-----2022-02-17 52.6.253.142

2022-02-17-----2022-02-17 54.208.18.2

2020-12-24-----2020-12-24 35.172.90.51

2020-12-24-----2020-12-24 34.231.82.204

2020-12-24-----2020-12-24 18.204.255.140

2020-12-24-----2020-12-24 18.234.13.197

2020-10-22-----2020-10-22 34.200.127.100

2020-10-22-----2020-10-22 18.204.101.11

2020-10-22-----2020-10-22 3.221.216.140

2020-10-22-----2020-10-22 34.202.126.69

2020-02-18-----2020-02-18 54.86.70.158

2020-02-18-----2020-02-18 54.209.126.115