See also ./dnssd_notes.md

How to get CAA records

For some reason, I have to specify the nameserver when I dig against cloudflare:

dig @venkat.ns.cloudflare.com caa aiproxy.pro +answer  

How to use a specific name server with dig

dig @8.8.8.8 aiproxy.pro  

How to do a basic dns lookup

dig louzell.com  

How to do a reverse dns lookup

dig -x 64.34.164.21  

These two commands do the same thing (notice in the ptr version the IP order is swapped):

dig +noall +answer -x 3.20.251.10  
dig +noall +answer PTR 10.251.20.3.in-addr.arpa  

Old serverbeach tutorial on PTR records

How to get txt records

dig -t txt example.org  

How to get the name servers of my host

host -t ns aiproxy.pro  

How to benchmark nameservers

To find fastest dns server for my local setup, use namebench (update 2024-01-27: this is no longer maintained)
http://code.google.com/p/namebench/

How to inspect DNS resolution order on MacOS

The only entry in the autogenerated file /etc/resolve.conf is nameserver 192.168.1.1
See scutil --dns for the full list of resolvers