My best guess is that someone migrated DNS providers (or some engineer playing with infrastructure as code…) and it’s just an unintentional missing DNS record, oops.
The Hacker News API is still up: https://github.com/HackerNews/API https://hacker-news.firebaseio.com/v0/topstories.json?print=...
To @dang or whoever is reading at Algolia: you can set up continuous monitoring for problems at the DNS/TCP/TLS/HTTP layers from just your URL at https://heiioncall.com/ and we’d definitely alert you if the DNS record disappears or it’s otherwise unreachable for more than X minutes. (Email me if you need help getting it set up.)