Flushing your DNS Cache on any Operative System (any OS)

Hello networkers, You can use the following specific instructions for clearing the DNS cache on computers and servers with any OS: 

Windows OS (from Windows 8 and earlier)

1. Click the Start Menu
2. Go to All Programs
3. Choose Accessories and right-click Command Prompt
4. Choose Run as Administrator

ipconfig /flushdns

MAC OS X 10.4 tiger

1. Click the Terminal icon in the dock or in Finder under Application/Utilities/Terminal

dscacheutil -flushcache

MAC OS X 10.7 and 10.8

1. Click the Terminal icon in the dock or in Finder under Application/Utilities/Terminal

sudo killall -HUP mDNSResponder


Linux (all other distributions)

1. Open a terminal window (gnome-terminal, konsole, xterm, etc)

sudo /etc/init.d/nscd restart
or
sudo /etc/init.d/nscd restart 

Execute:
lookupd -flushcache

MAC OS X 10.5 and 10.6
 
Execute:
dscacheutil -flushcache;sudo killall -HUP mDNSResponder

Execute:
sudo service network-manager restart