# id relevant nameserver
dig twitter.com ns   # --> ns1.mydyndns.org, etc.

# get its IP
dig ns1.mydyndns.org   # --> 63.208.196.92

# what twitter records do you know about?
host twitter.com 63.208.196.92

## Using domain server:
## Name: 63.208.196.92
## Address: 63.208.196.92#53
## Aliases: 

## twitter.com has address 128.121.146.100
## twitter.com mail is handled by 10 aspmx2.googlemail.com.
## twitter.com mail is handled by 10 aspmx3.googlemail.com.
## twitter.com mail is handled by 10 aspmx4.googlemail.com.
## twitter.com mail is handled by 10 aspmx5.googlemail.com.
## twitter.com mail is handled by 1 aspmx.l.google.com.
## twitter.com mail is handled by 5 alt1.aspmx.l.google.com.
## twitter.com mail is handled by 5 alt2.aspmx.l.google.com.

http://catalog.sonomalibrary.org/ipac20/ipac.jsp?session=1208376YY345A.33876&profile=dial&lang=eng&logout=true&startover=true

Use 'host NAME SERVER' where:

* 'NAME' is some base domain name you want to know more about
* 'SERVER' is the IP address of a nameserver to be queried (typically you'll want to use one of the nameserver for the name you're inquiring about)

What records does this nameserver have for a given domain?

Bash