3 ms·
If I do: nslookup > server 8.8.8.8 Default Server: dns.google Address: 8.8.8.8 > facebook.com Server: dns.google Address: 8.8.8
by rbobby 5y ago
If I do:
nslookup
> server 8.8.8.8
Default Server: dns.google
Address: 8.8.8.8
> facebook.com
Server: dns.google
Address: 8.8.8.8
DNS request timed out.
timeout was 2 seconds.
DNS request timed out.
timeout was 2 seconds.
*** Request to dns.google timed-out
Weird.
- chrononaut 5y agoAt the time, OP likely pulled cached DNS records to interrogate the associated IPs directly for their application (HTTP) level resources.
- rbobby 5y agoAnd thinking on this... a timeout is the right answer if facebook's dns servers are missing in action.
- 1vuio0pswjnm7 5y agoTheres no need to use a cache. Even if authoritative DNS servers are unreachable, there are, for example, multiple, authorised, public scans of port 53 available for free download. There are also passive DNS datasets also available for free. While recursive caches may be convenient, IMO they are the least trustworthy sources of DNS data.