[Looks like a handy little tool if you’re in the website business][link], and it even has a pithy one-line description:
>In short, it’s nslookup, if nslookup queried over 1500 servers and collated their results.
Bonus points for being open source and installable via `pip`.
[link]: http://samarudge.github.io/dnsyo/ “Dnsyo by samarudge”