Web Tools
AnalogX: DNSDig
DNSDig is a web version of dig. Allows you to query for a domain's DNS from any machine on the internet. Has very comprehensive results.
Codeflux Internet Tools Gateway
A gateway for: finger, nslookup, WHOIS, SSL, traceroute, ping, and dig.
DNS Report
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.
Global Whois
A WHOIS domain name search. Check domain name registrations, look up domain names, IP addresses, nameservers, registrars, etc.
Kloth.net NSlookup
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 i…
Lookup Server
Provides basic forward and reverse DNS lookups, as well as MX record and server software lookups.
Name Server Zone Transfer Tool
Free tool to check the security of any name server. Requests a name server zone transfer for any domain.
Sitegizmos Webmaster Tools
Sitegizmos provides some DNS tools, as well as some other tools useful to webmasters.
squish.net DNS Checker
Complete DNS traversal check. Shows you every DNS server that is (or may be) used for a DNS lookup, very comprehensive.
Web-Based NSlookup page
You can query any domain here to find the DNS information similar to a nslookup. Links to whois information.
WebHostSelect dig
Free online DNS Dig tool, similar to the UNIX "dig" command.
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