How To Get A Reverse DNS Lookup On The Command Line

Author: , September 1st, 2021

There are three commands in Linux to easily get a reverse DNS lookup with: dig, host and nslookup. Here are examples of each: shell> dig -x +short

shell> dig -x

shell> host

shell> nslookup

How To Fix DNS Lookup Issues on Macos Mojave 10.14.6

Author: , July 22nd, 2020

dscacheutil -flushcache System Preferences -> Network -> Advanced -> DNS -> Add, and at the top. If they are already there, CHANGE THE ORDER!

How To Get A Full DNS Zone Transfer

Author: , November 29th, 2010

To see all the records in a domain, use the ANY keyword with the dig command: dig @your.dns.server. ANY Commands for full DNS zone transfer of a domain: nslookup -query=axfr domain server dig -t axfr domain @server host -t axfr domain server

DNS Cache Poisoning

Author: , May 3rd, 2010

Ran into an odd problem this morning on my Verio server. Was unable to get DNS resolution on either or I was able to get DNS resolution on both my home systems and the ICI servers. That meant that the issue was specific to Verio. I called them. I was disconnected before i […]