Crazy. I can't remember an incident like this ever happened before and it's still not fixed? .de is probably the most important unrestricted domain after .com from an economical perspective. Millions of businesses are "down".
DENIC apparently resolved all .de domains to NXDOMAIN in 2010: https://www.theregister.com/2010/05/12/germany_top_level_dom...
It's Germany, pessimistic time estimation + 1/3 and you are in a realistic time frame for the issue being resolved.
Must have been mid 2000s. Root dns servers were down. Super hard to diagnose the issues it causes on your side because it "never happens".
There's a good index of major DNSSEC outages here, https://ianix.com/pub/dnssec-outages.html
Well it was already very late in the day (21-22?) so the impact was not big I would say
I remember when .com went down, in July 1997.
https://archive.nytimes.com/www.nytimes.com/library/cyber/we...