iP or domain name lookup

testcenter.duolingo.com Server iP：

Current resolution：

domain resolution record：

2024-10-06-----2024-10-06 35.175.57.110

2024-10-06-----2024-10-06 44.219.116.133

2024-08-07-----2024-08-07 35.171.111.57

2024-07-20-----2024-07-20 3.231.125.235

2024-07-20-----2024-07-20 52.1.217.207

2024-07-20-----2024-07-20 34.195.210.147

2024-07-20-----2024-07-20 18.206.110.220

2024-07-11-----2024-07-11 3.233.255.255

2024-07-11-----2024-07-11 54.236.227.158

2024-07-11-----2024-07-11 44.199.136.111

2024-07-11-----2024-07-11 54.144.211.131

2024-06-14-----2024-06-14 34.230.248.35

2024-06-14-----2024-06-14 34.239.191.69

2024-03-19-----2024-03-19 3.225.231.180

2024-03-19-----2024-03-19 3.223.8.114

2024-02-17-----2024-02-17 52.55.201.72

2024-02-17-----2024-02-17 54.145.52.13

2024-02-17-----2024-02-17 44.205.138.55

2024-02-02-----2024-02-02 3.224.43.127

2024-02-02-----2024-02-02 54.163.64.102

2024-01-19-----2024-01-19 3.227.225.40

2024-01-19-----2024-01-19 52.45.43.113

2024-01-19-----2024-01-19 3.215.198.114

2022-11-05-----2022-11-06 44.199.109.130

2022-11-05-----2022-11-06 34.196.232.235

2022-11-05-----2022-11-06 3.232.246.96

2022-11-05-----2022-11-06 52.2.30.32

2021-12-09-----2021-12-09 35.173.69.244

2021-12-09-----2021-12-09 3.218.52.2

2019-11-24-----2019-11-24 34.233.76.245

2019-11-24-----2019-11-24 3.229.231.152

2019-09-13-----2019-09-13 54.174.155.212

2019-09-13-----2019-09-13 52.44.113.155

2019-09-13-----2019-09-13 34.202.243.106

2019-09-13-----2019-09-13 18.214.174.18