How to perform a DNS Flush On a Mac Device

Question

How do I clear DNS (Domain Name System) cache?

Cause

Change in IP addresses/domain or cache out of date.

Answer

If a website has changed IP addresses or is out of date, a DNS flush may be required. 

  1. Navigate to Search (Magnifying Glass) at the top right and type in "Terminal".
  2. Once the Terminal opens, type: sudo killall -HUP mDNSResponder.
    • Enter your Mac Password if prompted.
  3. Close out Terminal once complete.

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Details

Article ID: 36106
Created
Tue 8/29/17 8:18 AM
Modified
Fri 7/12/19 3:34 PM