DIG reference

dig google.com
dig NS google.com
dig @ns1.google.com google.com
dig MX google.com
dig -x 8.8.8.8
dig @ns1.google.com google.com axfr
ex:dig linux.com +short

1.dig ###list all the Root DNS servers

2.dig @198.41.0.4 mail.google.com
###198.41.0.4(root dns server) Send a DNS request to one of these Root servers for info about

mail.google.com
The Root server will point us to a list of Top Level Domain (TLD) servers for the .com domain

3.dig @192.5.6.30 mail.google.com
###192.5.6.30(Top Level Domain (TLD) server)

4.dig @216.239.32.10 mail.google.com
###216.239.32.10(google's dns server)

For example:
dig
dig @198.41.0.4 www.securitytube.net
dig @192.5.6.30 www.securitytube.net
dig @ns1.mydyndns.org www.securitytube.net
####www.securitytube.net.   600     IN      CNAME   ghs.google.com
dig @198.41.0.4 ghs.google.com
dig @192.5.6.30 ghs.google.com
dig @216.239.32.10 ghs.google.com
######ghs.google.com.         604800  IN      CNAME   ghs.l.google.com.
######ghs.l.google.com.       300     IN      A       74.125.71.121
Now www.securitytube.net == 74.125.71.121

Reverse Dns lookup
ping linux.com -n 1
###Reply from 140.211.167.55: bytes=32 time=229ms TTL=51
dig 55.167.211.140.in-addr.arpa. PTR or dig -x 140.211.167.55

 

本文出自 “漫步Hacking时空” 博客，谢绝转载！