3 ms·
If an authoritative DNS entry was removed, it can take up to 72 hours for that change to be propagated around the world, though usually just a few hours for som
by PeterCorless 5y ago
If an authoritative DNS entry was removed, it can take up to 72 hours for that change to be propagated around the world, though usually just a few hours for some other authoritative DNS systems to get you mostly back:
https://ns1.com/resources/dns-propagation#:~:text=DNS%20propagation%20is%20the%20time,typically%20takes%20a%20few%20hours https://ns1.com/resources/dns-propagation#:~:text=DNS%20prop....
- tester756 5y agoWhy it takes this long?
- withinboredom 5y agoCaching
- mnordhoff 5y agoResolvers typically cache successful "does not exist" responses for no more than 1-3 hours. (And authoritative servers often have a lower negative TTL.) (There's a corner case related to DNSSEC that can make it go higher, but that's being worked on, and isn't relevant here.) In this situation, the nameservers were just down. I haven't done exhaustive research, but the resolvers I'm aware of cache that kind of thing for no more than 15 minutes.
- withinboredom 5y agoIf there’s a chain of caches 3 deep, a 15 minute cache on bad responses will take 45 minutes to clear.