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DNS Stuff - http://www.dnsstuff.com/
Many free web-based DNS and domain name tools all in one location. Includes standard DNS lookups, WHOIS/IPWHOIS, and even obscure DNS hosting tests, IPv6, IP-to-country and spam database lookups. Fast and thorough. |
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DNS Report - http://member.dnsstuff.com/pages/dnsreport.php
Provides a free DNS report on your domain name, verifying that your DNS hosting is working properly. Includes over 40 different tests, looking for both minor and major problems. |
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DNS Bajaj - http://www.zonecut.net/dns/
Check the delegation of your domain. Has interesting graphical results. |
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squish.net DNS Checker - http://www.squish.net/dnscheck/
Complete DNS traversal check. Shows every DNS server that is (or maybe) used for a DNS lookup. |
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AnalogX: DNSDig - http://www.analogx.com/contents/dnsdig.htm
DNSDig is a web version of dig. Allows queries for a domain's DNS from any machine on the Internet. |
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CheckDNS - http://www.checkdns.net/
Online utility for DNS administrators. Test your DNS servers, domain registration, mail and web servers. |
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DNS Search Gateway - http://cgibin.erols.com/ziring/cgi-bin/nsgate/gate.pl
Handy web-based DNS lookup service, with links. |
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Kloth.net NSlookup - http://www.kloth.net/services/nslookup.php
Web-based nslookup tool that lets you look up IP address information. Query their and other DNS domain name servers to look up and find IP address information of computers on the internet. |
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Lookup Server - http://www.lookupserver.com
Provides basic forward and reverse DNS lookups, as well as MX record and server software lookups. |
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Global Whois - http://www.ratite.com/whois/
A WHOIS domain name search. Check domain name registrations, look up domain names, IP addresses, nameservers, registrars, etc. |