DNS Tools

Reverse 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

DNS Errors

• Amazon Route 53 DKIM error