How do I Flush my DNS Cache

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Flushing your DNS cache can be useful when the information about a domain you hold is outdated, usually due to a recent change that has been made. While this step forces the DNS data out of your system, if the DNS server used for the queries does not have the updated information, you will still get the outdated data. Keep in mind that you will need to restart your browser after completing the following steps.

Contents

Windows

XP And Below

  • Go to start->run.
  • Type in "cmd" without the quotes.
  • At the command prompt type
ipconfig /flushdns

Vista And Above

  • Click on start->All Programs->Accessories
  • Right click on the command prompt and pick run as administrator.
  • At the command prompt type
ipconfig /flushdns

Linux (Generic)

  • Open a root terminal or use sudo (in ubuntu or similar systems) with the following command:
/etc/rc.d/init.d/nscd restart

Mac

OSX 10.5.1 and before

  • Use the following command in a terminal window:
lookupd -flushcache

OSX Leopard

  • Use the following command in a terminal window:
dscacheutil -flushcache
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