dns
DNS Quick Check - Online DNS Report Tool - Enter the domain to test realtime, Test your DNS delegation, DNS Servers, Mail and Web Servers, Network Admins, Webmasters, Hosting
http://www.checkdns.net/quickcheckdomainf.aspx
Reverse DNS Lookup
http://remote.12dt.com/index.php
Look up an IP address and get the corresponding domain name. Then get the whois database information for the domain.
Added 12 years ago
Online Ping, Traceroute, DNS lookup, WHOIS, Port check, Reverse lookup, Proxy checker, Mail relaying, Bandwidth meter
http://ping.eu/
Easy to use web-based service.
a simple DNS lookup tool
https://dns-lookup.jvns.ca
Tool per fare interrogazioni DNS da una pagina web.
Per vedere tutto il percorso (dai root server): https://dns-lookup.jvns.ca/trace.html
Registry Agreement Termination Information Page - ICANN
https://www.icann.org/resources/pages/gtld-registry-agreement-termination-2015-10-09-en
Lista dei domini root che non sono più validi, praticamente solo sponsored top-level domain
NIP.IO - wildcard DNS for any IP Address
http://nip.io/
Un server DNS per mascherare gli IP con hostname
This is a list of all active TLDs
https://data.iana.org/TLD/tlds-alpha-by-domain.txt
Lista dei domini root attivi.