Flush DNS Cache on Ubuntu
resolvectl flush-cachesReverse DNS/rDNS/PTR Record
How to delete Google Cloud DNS Zone
DNS Tools
- https://dnschecker.org
- https://intodns.com
- https://dnsmap.io
- http://leafdns.com
- https://dnsviz.net
- https://www.dnsperf.com
- dig
- Google Public DNS Query Tool
- DNSSEC Debugger
- Find all sites using a specific nameserver
DNS History
- https://securitytrails.com/ – IP history
- https://completedns.com/dns-history/ – DNS History
DNS Propagation Checker
- https://dnsmap.io – check DNS propogation from differnt countries.
- Whatsmydns.net – check DNS propogation from differnt countries.
- https://dns.google – check DNS propogation from differnt countries.
DNS
- Free DNS Hosting
- Delegate a sub-domain to DNS server
- Find Reverse-DNS/PTR using dig, nslookup, host
- dnsmasq
- Install Cpanel DNS Only Server
- How to find all subdomains of a domain
DNS Resolver
- /etc/resolv.conf
- Ubuntu Configure systemd-resolved
- Public DNS Resolver
- Install Unbound DNS caching server