3 ms·

Are there any uostream DNS Servers that would allow you to just download the while database and then everything immediately after its TTL runs out? I can image

Are there any uostream DNS Servers that would allow you to just download the while database and then everything immediately after its TTL runs out? I can image it would be a lot of traffic.

zokier 3y ago
That would be zone transfer and its generally not allowed by DNS servers. And there couldn't be a single DNS server to query from, instead you would need to recursively query all the DNS servers which also is not exactly practical. https://en.wikipedia.org/wiki/DNS_zone_transfer https://en.wikipedia.org/wiki/DNS_zone_transfer
balou23 3y ago
You can download the root zone: https://www.internic.net/domain/root.zone https://www.internic.net/domain/root.zone
petee 3y ago
The resolver Unbound has a handy feature 'prefetch' [1] which refreshes a cached record before it expires. I'm unfamiliar with Technitium though Edit: another option allows for serving expired TTLs, which is permitted by rfc. There is a great explanation on their site [2] [1] https://unbound.docs.nlnetlabs.nl/en/latest/manpages/unbound.conf.html#unbound-conf-prefetch https://unbound.docs.nlnetlabs.nl/en/latest/manpages/unbound... [2] https://unbound.docs.nlnetlabs.nl/en/latest/topics/core/serve-stale.html https://unbound.docs.nlnetlabs.nl/en/latest/topics/core/serv...