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Is it possible to query all known domains from a DNS server?
Normally you ask a DNS server to resolve a domain like example.org
to the corresponding IP address. The server either knows the answer right off the bat (cached or authoritative), or where it might be found.
Ignoring the latter option, would it possible to query a DNS server for all the domains that it knows directly? I.e. "What domains do you know the IPs currently for?"
Probably there are at least admin tools to do this, but I'm more interested in the public API.
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