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Byte Solutions - Your complete IT Department
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| | | | | |  | | | | | | - Computer Repair and Computer Support
- Business Systems and Network Support
- Microsoft Gold Partner Solutions
- Network Infrastructure
- Asterisk VoIP Systems
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Free DNS Tools & Network Diagnostic Tools - Test DNS and Network Problems
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The DNS (Domain Name System) is one of the most important systems on the Internet. Its main function is to translate between domain names and IP addresses and to list the MTA (mail transfer agent) accepting e-mail for each domain. Think of it like the white pages for the Internet. The DNS is a hierarchical database that manages the Internet namespace, distributed over thousands of servers worldwide. This namespace is divided into zones, of which each is under the responsibility of independent administrators. For additional details on DNS look at the BIND documentation
Below is a list of many free DNS diagnostic tools and network diagnostic tools we use. We maintain this list frequently and are always adding to it. If you have any suggestions for additional free DNS Diagnostic tools of network diagnostic tools to be added to this list, please leave a comment on this form.
 Check DNS.net |
| CheckDNS.net is a real time test engine to check your DNS delegation, DNS Servers, Mail and Web Servers. CheckDNS.net gives you an overview on your domains state with a detailed and easy to read DNS report. Easy to use: just enter the domain name (for example, "yourdomain.com") to get a free report on this domain. Moreover, with PowerCheck you can check all domains in your responsibility at once and save this result. |
| myDNStools |
| myDNStools - a collection of free tools for troubleshooting, testing, checking, or simply just exploring. |
| DNSQueries |
| A nicely designed page full of tools similar to DNSStuff.comOne of my favorite parts is the DNS Health Check: "With this tool is possible to check the dns status of your domain name. The system will make some tests to check if everything is ok and the will report you a complete snapshot of how good is configured your DNS." |
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| DomainTools |
| Wildcard search of all current/deleted/expired whois domains. Domain Suggestions Engine serves over 10 Billion suggestions a year. DNS Tools allows you to Ping, Traceroute, or DNS lookup for a domain/IP from your web browser. DNS Tools also allows you to view information about your own IP address using the My IP tool. |
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| dTools |
| Wake On Wan Turn ON your computer over Internet by sending magic packet PageRank checker Check Google PageRank, Alexa rank, and many more Ports probe Tests common ports on your hostname IP 2 Value Convert IP address to value Value 2 IP Convert value to IP address WHOIS service Get register information about domains PING service Ping any host in the world Tracert Trace route to a host Hash calculator Calculate MD5, SHA1 and CRC32 hash online ROT13 generator Generate ROT13 from any text provided Network speeds chart How fast is OC-3, OC-12, T1, DS3... Who am I? Shows information about you DNS Report See records of any nameserver ASCII art generator Create cool ASCII art for your router motd IMG2ASCII converter Upload your image and create ASCII art from it ASCII art gallery Huge collection of ASCII pictures classified by topic Tiny URL Don't like long addresses? Then cut it! :) Meta TAG analyzer Script for analyzing meta tags of your web page XML Sitemap Generator Free Online XML Sitemap Generator |
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| EmailStuff |
| DNS This tool lets you query the domain name system for information. If you want to see the IP addresses a hostname maps to, enter the hostname and select A (IP4 address) from the pull-down menu. To see the host names that an IP address claims to be, enter the IP address and select PTR (Reverse DNS) from the pull-down menu. To check the SPF records for a domain, enter the domain and select TXT (used for SPF and DKIM) from the pull-down menu. In the results, the TTL column shows how many seconds our DNS server will cache the answer for before asking the authoritative name servers for a new value. Technical Details This tool uses our caching DNS server, so the view you see here is what a typical user may see. If you've recently changed your DNS records you may still see the old values returned here, from cache, the same way as they may be cached by other ISPs. We rewrite some queries a little. If you ask for a PTR record for something that looks like an IP address (v4 or v6) we rewrite it into the appropriate form for resolving reverse DNS. Because, well, that's almost always what you want. Blacklist Tool Help This tool will check a number of email blacklists to see if they are listing the given IP address as a source of unwanted email. To use it you must enter the IP address mail is sent from into the "Enter an IP" box. We don't support entering a hostname into this tool as there's seldom much connection between the domain name someone might enter and the IP address mail related to that domain is actually sent from. If you want to see if your mailserver is listed, you'll need to do a little work to find the IP address of that mailserver, but it's much more accurate that way, trust us. At the left of each list, you'll see a green disk, a red disk or no disk at all. If the disk is green, it's all good. If it's red, then that blacklist is listing the IP address as a source of unwanted email and it's a problem the owner of the address should cons |
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| intoDNS |
| IntoDNS checks the health and configuration of DNS servers and mail servers. And provides suggestions to fix and improve them, with references to protocols’ official documentation. |
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| ipTools |
| Miscellaneous DNS tools. Lots of them including Ping, NsLookup, Trace, DNS Records, URL Decoding, URL Encoding, Email Verification and Spam Black List check. |
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| Network-Tools |
| Miscellaneous DNS and network testing tools including Ping, NsLookup, Trace, DNS Records, URL Decoding, URL Encoding, Email Verification and Spam Black List check. |
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| Pingability |
| This page lets you check a DNS zone. It will perform a set of checks on your name servers and email servers. And give recommendations to improve your setup. |
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| Sam Spade |
| This tool is the original Sam Spade tool that's been running for nearly five years. It's been rewritten from scratch four times since it first appeared, but still does the same things It takes a hostname or an IP address, guesses at the domain name, and then runs some whois queries to find out who owns the domain and the block of IP addresses it lives in, and traces the route packets take to the host. It's slow, crufty, returns less information and has more bugs than the newer tools, but it's still handy to have around. A lot of spam includes pointers to websites. Often the URL is obfuscated in a variety of ways - by using %-encoded characters, bogus authentication information, IP addresses written in strange ways This tool will decode any legal URL, showing you how it was obfuscated, what the real URL looks like and who hosts the website. This is a secure web browser. It doesn't pass any information about you, it won't accept cookies, it won't run any JavaScript, any ActiveX or Java applets. It won't even reveal the IP address you're connecting from. Enter a URL, such as http://samspade.org/ssw/ into the box and hit Go. You'll see the raw http response from the server Any links, redirects or frames in the original webpage will be shown as active links. Some interesting constructs in the web page will be highlighted. The downsides are that some websites will refuse to show you any content without a cookie - and there's no way to accept a cookie, the HTML isn't parsed particularly carefully, so some links may not be active, and authentication isn't supported yet. This tool checks the reverse DNS for the 256 addresses surrounding the one you're looking at. It shows the hostname claimed for each address (if any) and checks for forged and bogus reverse DNS. (If reverse DNS gives a hostname which doesn't exist, it's described as bogus. If the hostname does exist, but doesn't resolve to the original IP address it's described as forged.) |
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| ZoneCheck |
| The DNS is a critical resource for every network application, quite important to ensure that a zone or domain name is correctly configured in the DNS. ZoneCheck is intended to help solving misconfigurations or inconsistencies usually revealed by an increase in the latency of the application, up to the output of unexpected/inconsistent results. |
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| DNS Test |
| This service allows you to perform the test of authoritative nameservers for a specific domain name, its settings, status, availability etc. It also shows you many useful information about the domain name and its zone (A, NS and MX records etc.). |
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| DNSdoctor |
| DNSdoctor will perform several tests on your domain to ensure that it is correctly configured, so that you can enjoy a trouble free domain. |
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| The DNS Sleuth |
| This is an online version of Sleuth -- a detector of common errors in DNS zones. |
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| ZoneEdit.com |
| This DNS utility is provided by ZoneEdit.Com, the industry leader in DNS and domain management solutions |
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| DNSStuff.com |
| Free tools from one of the early web based DNS diagnostic sites |
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| gTools |
| GTools is a collection of free web, DNS, hash, SEO and design tools. |
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| Mice and Men |
| Some free DNS diagnostic tools including an online version of DIG, a custom detailed DNS diagnostic and various DNS query tools. |
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| DNS Digger |
| Find siblings of a domain name in the DNS database. Lists other websites hosted on a machine, or those that share the same network prefix. |
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| DNS Bajaj |
| A cool graphical display of the relationships between a zone and its nameserver delegations starting at one of the roots. Includes some textual information and warnings about the zone. I really like this tool. |
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| DNS Right |
| A good collection of free dns and networking diagnostic tools. |
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 DNS Cog |
| DNSCog is a suite of free DNS diagnostics tools, including a comprehensive DNS analysis tool, WHOIS lookup, traceroute and DNS query. |
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