75.101.173.121上的网站：
绑定过的域名如下：
2024-05-31-----2024-06-12 www.duolingo.com
2024-06-12-----2024-06-12 schools.duolingo.com
2024-06-11-----2024-06-11 uk.duolingo.com
2024-05-31-----2024-06-12 www.duolingo.com
2024-06-12-----2024-06-12 schools.duolingo.com
2024-06-11-----2024-06-11 uk.duolingo.com