Where can I find the DNS cache?
Solution 1:
You can try using dnsutils to do that exactly. They are not installed by default so here you go:
sudo apt-get install dnsutils
Then you can dig around the DNS System:
dig host.tld
Which will in return give you a DNS Record from your DNS Server specified in /etc/resolv.conf.
Caching is usually done by individual applications, like for example Firefox. To my knowledge there are only tools to flush the cache, not to read it out.
Cheers!