What is the command to flush and register the DNS? Start an elevated command prompt. To clear out the resolver cache, type ipconfig/flushdns at the command line. To renew DHCP leases and reregister DNS entries, type ipconfig/registerdns at the command line. When the tasks are complete, you can check your work by typing ipconfig/displaydns at ...Is it dangerous to flush DNS?
Security against manipulation: You should also clear the DNS cache from time to time for security reasons. The information in the cache is practical for delivering web projects – but can quickly become dangerous in the wrong hands.