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Flushing your DNS Cache

How to flush your DNS cache in Windows

Windows® 10 or 8

To clear your DNS cache if you use Windows 10 or 8, perform the following steps:

  1. On your keyboard, press Win+X to open the WinX Menu.
  2. Right-click Command Prompt and select Run as Administrator.
  3. Run the following command:
    ipconfig /flushdns
    

If the command succeeds, the system returns the following message:

Windows IP configuration successfully flushed the DNS Resolver Cache.

Windows® 7

  1. To clear your DNS cache if you use Windows 7, perform the following steps:
  2. Click Start.
  3. Enter cmd in the Start menu search text box.
  4. Right-click Command Prompt and select Run as Administrator.
  5. Run the following command:
    ipconfig /flushdns
    

If the command succeeds, the system returns the following message:

Windows IP configuration successfully flushed the DNS Resolver Cache.

Windows® XP, 2000, or Vista®

To clear your DNS cache if you use Windows XP, 2000, or Vista®, perform the following steps: 1. Click Start. 2. On the Start menu, click Run....

Note

If you do not see the Run command in Vista, enter run in the Search bar.

  1. Run the following command in the Run text box:
    ipconfig /flushdns
    

If the command succeeds, the system returns the following message:

Successfully flushed the DNS Resolver Cache.

How to flush your DNS cache for MacOS®

Versions 10.10.4 and above

To clear your DNS cache if you use MacOS X version 10.10.4 or above, perform the following steps: 1. Click Applications. 2. Click Utilities. 3. Click Terminal. 4. Run the following command:

sudo killall -HUP mDNSResponder
If the command succeeds, the system does not return any output.

Warning: To run this command, you must know the computer's administrator account password.


Versions 10.10.1, 10.10.2, and 10.10.3

To clear your DNS cache if you use MacOS X version 10.10 through 10.10.3, perform the following steps: 1. Click Applications. 2. Click Utilities. 3. Click Terminal. 4. Run the following command:

sudo discoveryutil mdnsflushcache
If the command succeeds, the system does not return any output.

Warning: To run this command, you must know the computer's administrator account password.


Versions 10.7, 10.8, and 10.9

To clear your DNS cache if you use MacOS X version 10.7, 10.8, or 10.9, perform the following steps:

  1. Click Applications.
  2. Click Utilities.
  3. Double-click Terminal.
  4. Run the following command:
    sudo killall -HUP mDNSResponder
    

If the command succeeds, the system does not return any output.

Warning: To run this command, you must know the computer's administrator account password.


Versions 10.5 and 10.6

To clear your DNS cache if you use MacOS X version 10.5 or 10.6, perform the following steps: 1. Click Applications. 2. Click Utilities. 3. Double-click Terminal. 4. Run the following command:

sudo dscacheutil -flushcache

If the command succeeds, the system does not return any output.

Warning: To run this command, you must know the computer's administrator account password.

How to flush your DNS cache for Linux

By default, most linux instances don't have a DNS cache. Look up your specific distribution's instructions via google if needed.