whois : Java Glossary

whois

A Unix utility to find out who owns a given domain name or IP (Internet Protocol).

Whois

There are five common questions about domain names and IPs (Internet Protocols) you may have:

Who owns this IP?
I know the domain name. What IP does it map so I can put an entry in my hosts. file.
Who owns this domain name?
Where on the planet is this IP broadcasting from?
What is my face IP?
Is this server available/up?

1. Who Owns This IP?

For the first question, who owns or is currently using this IP, see IP lookup services

domaintools.com; most comprehensive list of trivia
GeekTools: find owner of a given IP.
arin.net
CyberAbuse.org: find owner given IP or DNS (Domain Name Service) name.

2. Finding the IP From a Domain Name

For the second question, finding the IP given the domain name, you need an DNS lookup service:

Use ping. At the command prompt type ping mindprod.com (or whatever the domain name is.). If ping fails, it might simply mean the server does not support the ping protocol. Many servers are dropping support to avoid a DOS (Denial Of Service attack).
domaintools.com for .com, .net, .org, .info, .biz and .us. This search is more flexible letting you find usaweatherreport.??? by typing just weather. The best way to figure out what all the option check boxes are for is just to tick them one at a time and see what the effect is.
www.networksolutions.com/whois/index.jsp for .com, .net and .org. They refuse to tell you anything about who owns the domain. They just tell you of similar domain names that are still unassigned.
cira.ca for .ca
You can use TweakDUN to look up DNS names and add their IPs to your host file. You can also use it to lookup up DNS names with the DNS abilities of your computer and its gateway.

3. Finding out who owns a Domain

For the third question (who owns this domain) use one of these whois services:

101Domain.com. Does not make you take a typing test to use the service as many others do.
www.networksolutions.com/whois/index.jsp for .com, .net and .org
cira.ca for .ca

You might think it sufficient for to check if a domain name is taken to simply point your browser to www.xxxxx.com and see if you get a 404 not found error. However, the name may be taken, with no webserver set up, so the name would appear to be free when it was actually taken.

4. Finding out Where a Domain/IP is Located

For third question (where is the domain located) use one of these IP locator services:

Discussion of kludges to get an approximate answer.
IP Locator. The small box where key the IP is just below the big one where you can key an email address.
netgeo.
Google geographical location IP address to find software you can buy to do this.
MaxMind sells code to obtain the country, region, city, latitude, and longitude of any IP address. This would often be an ISP (Internet Service Provider) rather than the actual company responsible for content.

5. Finding our Your Face IP

Ways of Finding Your Face IP
Logo	Link	Notes
	Your face IP :[50.16.17.90]	Your face IP is displayed at the bottom of every page of this website. I do this with SSI (Server Side Includes).
	IPchicken.com	tells your face ip, and which ports you have open. They also tell you your face name, e.g. your URL (Uniform Resource Locator) on the web, possibly temporarily assigned for your connection. It might look something like this S0106991195576dda.gv.shawcable.net or d207-81-138-97.bchsia.telus.net That is not my real one. I don’t want to encourage hackers.
	checkip.dyndns.org:8245/	Offers many other services as well.
	WhaIsMyIPAddress.com	has many annoying ads you must close to discover the answer.
—	—	In a Servlet you can use javax.servlet. ServletRequest. getRemotePort().

The face ip is different from the IP of your computer on the LAN (Local Area Network). An IP of a computer on a LAN is typically something like 192.168.2.7. The router has two ips, one it talks to the computers on the lan often 192.168.2.1 and one it uses to talk to the outside world, dynamically assigned by the ISP using DHCP (Dynamic Host Configuration Protocol).

6. Is this server available/up?

Available Applet is a whoIs that tells you if a server is available/up. It also tells you the IP given the host or the host given the IP.

WhatIsMyIP has a number of IP tools for programmers.

Available Applet is a whoIs that tells you if a server is available/up. It also tells you the IP given the host or the host given the IP.

WhatIsMyIP has a number of IP tools for programmers.

domain names
face IP
IP
NetGeo
Soap WhoIs Service

	available on the web at:	http://mindprod.com/jgloss/whois.html
	optional Replicator mirror of mindprod.com on local hard disk J:	J:\mindprod\jgloss\whois.html
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