Como limpar o cache do DNS?

Este artigo fornece instruções sobre como limpar o cache DNS em computadores e navegadores da web. Esse procedimento é necessário para que as resoluções armazenadas em cache anteriormente sejam limpas e a pesquisa subseqüente seja executada com base nas configurações de DNS recém-configuradas.

Solução

As tabelas a seguir fornecem instruções para limpar o cache DNS em computadores e servidores. Os comandos precisam ser executados no prompt de comando com privilégios de administrador.

Windows 7 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

     Run the following command in the command line and hit enter

       ipconfig /flushdns

Windows 8

Press the Windows Key or hover your mouse over the bottom left corner and click the Windows Icon

Begin typing Command Prompt

Right-click the application and select Run as Administrator

Run the following command in the command line and hit enter

ipconfig /flushdns

OS X 10.4 TIGER

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

     Run the following command in the command line and hit enter

lookupd -flushcache

leopard_os_x.gif OS X 10.5 and 10.6 LEOPARD

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

    Run the following command in the command line and hit enter

dscacheutil -flushcache 

OS-X-Lion-Logo.jpg OS X 10.7 and 10.8 Lion

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

sudo killall -HUP mDNSResponder

apple-logo-600px-304.jpg OS X 10.9 and 10.10.4 Yosemite, 10.11 El Capitan and 10.12 Sierra

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

sudo dscacheutil -flushcache

sudo killall -HUP mDNSResponder 

871px-Linux_logo.png Linux (most distributions)

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

sudo /etc/init.d/nscd restart

   or

sudo /etc/init.d/nscd restart

ubuntu-logo1.gif Ubuntu Linux

 Open a terminal window

     Run the following command in the command line and hit enter

 sudo service network-manager restart