Table of Contents
Difficulty
Very easy
Clear DNS
Operating Systems
Windows
XP, 2000, VISTA, 7, 8, 8.1, 10, 11
Open a Command Prompt with Administrative Privileges and type
ipconfig /flushdns
MAC OS
10.10
Open a Terminal and type
sudo discoveryutil mdnsflushcache
sudo dscacheutil -flushcache
10.7, 10.8, 10.9
Open a Terminal and type
sudo killall -HUP mDNSResponder
sudo dscacheutil -flushcache
10.2, 10.3, 10.4, 10.5, 10.6
Open a Terminal and type
sudo dscacheutil -flushcache
Linux
systemd
Open a Terminal and type *
resolvectl flush-caches
nscd
Open a Terminal and type
- Restart service
service nscd restart
- Reload Service
service nscd reload
dnsmasq
Open a Terminal and type
- Restart service
service dnsmasq restart
BIND
Open a Terminal and type
- Restart service
rndc restart
- Flash specific domain
rndc flushname domain.tld
- Flash view (LAN)
rndc flush lan
Routers
CISCO
IOS
Switch to enable mode
- Clear specific domain
clear host domain.tld
- Clear all domains
clear host *
Juniper
JunOS
- Clear all domains
clear dns
- Clear specific domain
clear security dns-cache domain.tld
FritzBox
The latest versions of the firmware do not allow for telnet, in those cases a router restart is required
Enable Telnet mode by dialing: #96*7* Connect with a telnet client to the router and type
- Stop DNS Service
multid -s
- Start DNS Service
multid
Other Hardware
Synology
DSM 6
As a root user use the following to restart named.
synoservice --restart pkgctl-DNSServer
DSM 7
As a root user use the following to restart named.
systemctl restart pkgctl-DNSServer.service
Web Browsers
Google Chrome
Visit the following URL
chrome://net-internals/#dnsIn the page click on the Clear host cache button.
Microsoft Edge
Visit the following URL
edge://net-internals/#dnsIn the page click on the Clear host cache button.