ViewDNS.info - Free DNS related tools including Reverse IP Lookup, DNS Propagation Checker, Chinese Firewall Test...
IsHostedBy.com - IsHostedBy is a website where you can lookup where certain websites are hosted.
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
Prepostseo DNS Propagation Checker - Prepostseo DNS Propagation Checker is an online tool that allows you to perform a DNS lookup to check the domain name server records against your own website or any other domain, no matter where the servers are located.