IPCheck.ingA better and open source IP Toolbox. Easy to check what's your IPs, IP information, check for DNS leaks, examine WebRTC connections, test website availability, lookup DNS record, lookup Whois, and test latency from around the world.
BGP.Toolsbgp.tools allows you to do bgp debugging and gives insight into internet routing with ease in a user friendly way
intoDNS: checks DNS and mail servers healthintoDNS checks the health and configuration of DNS and mail servers.