Web Developer's Journal: LookUp Tools On The Web; The Really Useful PageApr 05, 2000, 19:07 (2 Talkback[s])
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Want to look up a domain registration, an IP address, or see what software a server is running? This is the place. Start here for a Domain Name Registration Search, a Reverse DNS Lookup, Traceroute, VisualRoute, NsLookup, Server Check, Modem Speed Test or Ping.
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Domain Registration Search
See whether a domain is available. If it's already registered, use the follow up links on the second page to find out who owns it. Many domain registration company sites offer this free service, but the one we recommend here is more thorough than most.
Reverse DNS Lookup
Got the IP address and want to find the domain name? This is the place.
Reports on the hops between routers from your machine to the destination address, including the time for the hop (measured three times) and the address of each router. You can do this on your own PC if it runs Windows 95 or above. From the Start menu choose Programs > DOS prompt. At the prompt type in tracert www.the-domain-you-want-to-look-up.com. You can do it from the Run menu too, but the results won't stay on the screen.
If you're on a network or otherwise firewalled, your PC Traceroute won't work. But you can still run Traceroutes through pages on the Web. Some secure sites reject the final stages of a Traceroute investigation.
A neat utility that shows a combination of Traceroute, Ping and DNS information in graphical form. You can check any domain from the Datametrics server in Fairfax, Virginia, USA.
Also referred to as a Domain Information Groper (Dig). Gives the IP address of the domain you enter
A more complicated DNS investigation tool that allows a range of interrogations of Domain Name Servers.
What's That Server Running?
Type in a domain and find out what server software and operating system are behind it.
Modem Speed Test
Measures the speed of your connection - not its theoretical speed, but how fast it's actually running.The first site is recommended, but it's based in Ireland, so if the transatlantic link is busy you'll get false (low) results in the USA. Within Europe it usually works well. For more accurate results, repeat the test a few times.
Here's a US test page - not as good as the page above (in our humble opinion).
This tool fires packets at an IP address to check that it's responding. There are many security issues surrounding the use of ping and a lot of sites will not respond. Almost all Web sites offering remote Pings have withdrawn the service, but here's one that's still running - at least for now.
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