How to Perform a DNS Flush on a Mac Device

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

Change in IP addresses/domain or cache out of date.

If a website has changed IP addresses or is out of date, a DNS flush may be required.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

For additional assistance, please contact Information Technology Services at 419-372-0999 or through chat.