DNSdumpster.com - Open source domain intelligence lookups for security recon
ViewDNS.info - Free DNS related tools including Reverse IP Lookup, DNS Propagation Checker, Chinese Firewall Test...
Whats My DNS - Instantly check your domain names current IP address and DNS record information against multiple name servers located in different parts of the world.
DNS Checker Tool - Check Domain Name System (DNS) records for any website.
NsLookup.io - A simple and powerful tool for querying DNS records
Flagfox - Flagfox is a Firefox extension that displays a flag depicting the location of the current websites...