ipconfig /flushdns
- Sierra:
sudo killall –HUP mDNSResponder
- El Capitan:
sudo killall –HUP mDNSResponder
- Yosemite:
sudo discoveryutil udnsflushcaches
- Mavericks:
sudo killall –HUP mDNSResponder
- Mountain Lion:
sudo killall –HUP mDNSResponder
- Lion:
sudo killall –HUP mDNSResponder
- Snow Leopard:
sudo dscacheutil –flushcache
- Older versions:
sudo lookup –flushcache
sudo /etc/init.d/nscd restart
sudo service network-manager restart