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Domain Registration - how to setup domain with DNS, IP Address, web host
This article shows how to setup your domain and explains DNS, Nameservers, IP
Address, Forwarding, domain registration and trouble shooting.
Introduction and scope
Almost Everyone who knows about the internet knows what a domain name
is. It is what identifies a unique website or email server. When you send an
email to someone@domain.com, the domain.com forms the domain name. When you type
in http://domain.com in the address bar of your browser, the domain.com is the
domain name of the website you are going to see.
But how does the computer know which page to show when there are almost
infinite number of domain names possible ? How does it know where to fetch the
webpage from ? This article answers these question and explains what you need to
do to register and setup your domain and tell all the computers in the world
that yourdomain.com should show your web page.
How to choose a domain name ?
There are many top level domains (TLDs) the most popular are the .com, .net and
.org – Countries have their own like .us, .in, .ca, .au etc and then there is
the new breed of domains like .tv, .info, .ws and so on but the most powerful
king of all is the .com Why ? Because it came first ? In the domain market,
single word domains sell for thousands of dollars and .com costs around 10 times
more than the others and is as difficult to get a new name. There is a myth that
domains with hypnens (dashes) are better for search engine rankings, I think
there may be some truth in that myth, but domains without dashes always seem to
cost more than the ones with dashes. The best way to register a domain is to
determine the keywords you are going to target by using the free trial of
keyword popularity and competition analysis from
wordtracker.com
and get a domain with those keywords in it. Another school of thought abandons
this approach and advocates brand name domains like yahoo.com instead of
everything-portal.com google.com instead of the-only-search-engine.com and
ebay.com instead of online-junk-acutions.com - you get the picture.
Name Servers Explained
Every computer connected to the internet has an ip address that looks
like 123.234.123.234
An ip address consists of 4 numbers separated by dots, each number ranging from
1 to 255. What this numbers mean is not important for us, all we need to
understand is that each computer on the internet has a unique ip address and if
the GoldenRobot wants to talk to R2D2 on the internet, it has to know the IP
address of R2D2 (name borrowed from the movie Star Wars).
But Wait a minute, does that mean that there are only 256*256*256*256 number of
computers that can connect to the internet, technically yes. But that number is
large enough for now until they start connecting ever microwave and freezer to
the internet (imagine your freezer automatically placing an order for 2 liters
of milk to the grocery store when it detects that your milk stock is
diminishing!)
OK, now you must be thinking all the ip address stuff is fine, but how does
it relate to domain names ? Remember that I said "if the GoldenRobot wants to
talk to R2D2, it has to know the IP address of R2D2 " - but all you give to your
computer is the Domain Name of the website you want to visit, so how can it get
the ip address ? Enter the NameServer.
The job of a nameserver is to resolve a domain name to an ip address. Simple.
A nameserver is similar to a telephone directory except that instead of
mapping person names to phone numbers, it maps domain names to ip addresses.
Imagine having just one telephone directory for all the people in the world
! In the same way, if they had just one nameserver for all domains, it would be
unmanageably huge and all the computers would have to contact that one
nameserver to get the domains resolved to ip addresses ! Even a
super-duper-mega-monster-computer would not be able to handle such a load !
So we have many nameservers. When you register a domain, you specify which
name server to use.
Now lets take our example
GoldenRobot wants to talk to R2D2
It will have to follow these steps
1> Look at the registrar entry for R2D2 to determine which nameserver to use
2> Connect to that nameserver and ask it for the ip address of R2D2
3> Connect to R2D2 using this IP address
In reality it is a bit more complicated due nameserver cacheing, and chained
recursive lookups leading to authoritative and non authoritative responses but
our example illustrates the basic concept and is sufficient knowledge to setup
your domain.
One misconception that I would like to clarify, some people think that each
domain name maps to a unique ip address, not true. Just as many people in a
house can share a single telephone number, many domain names can share a single
ip address. The NameServer will return the same ip address for all of these
domains and when the browser connects to that ip address, it says I am trying to
reach suchandsuch.com domain, the webserver then returns the correct page for
the domain requested. Obtaining a unique ip address (known as dedicated ip) for
your website is usually more expensive than sharing the ip address.
How to setup your domain name
Form the discussion we just had, you would be able to appreciate that
in order for you to get your domain to point to your webpage, you need to do the
following in theory
1> Obtain the ip address for the web host where your WebPages reside - this
is the webserver ip
2> Make an entry (Called as DNS Entry) in a Nameserver to resolve your domain
name to this ip address.
3> Configure your domain to use this nameserver
Most of the time, step 2 will be transparent to you as most webservers
provide nameservers in which they make the DNS entry for you when you purchase
webspace from them. Also, many good domain registrars provide their own
nameservers that you can use.
While registering a domain or after registering a domain, you will need to
set it up to use two or more nameservers. It is common to use multiple
nameservers so that if one of them is down the others may be used.
You have three options to set the nameservers
-
1> nameserver provided by your web host
Your webhost will usually have their own nameservers. In their documentation
they may say you need to use something like ns1.yourwebhost.com and
ns2.yourwebhost.com - If you use these, you need not bother about the
webserver ip address or any other settings, just configure your domain to use
these and you are all set.
-
2> nameserver provided by the registrar that you register your domain with
If you use this option, you will need to know the ip address of your webserver
(provided by your webhost). As you will be using the nameserver provided by
your registrar, you will need to set it up to point to the correct ip address
for your website by creating a DNS entry. The ip address for your webserver is
called as the A record and the ip address for your mail server is called as
the MX record, CNAME records are used if one domain needs to be similar to
another domain, but you do not need to understand these options for a basic
setup. Many top notch domain registrars in the industry provide advanced DNS
management like forwarding your domain to another site, subdomains, email id
management, wildcard dns etc
-
3> third party nameservers
This is an option that very advanced domain managers prefer when they wish to
have more features and greater control over their DNS records which may not be
provided by the registrar or the webhost.
Now a days, the line between the web hosts and the domain registrars is
fading as most domain registrars are providing web hosting and most web hosts
are providing domain registration. If you purchase your domain registration and
web hosting from the same company, chances are that you may never need to do any
setup at all.
What to look for in a registrar
It is always a good idea to register your domain with a domain registration site
rather than with your webhost so you can be able to shift your webhost in case
you need to without loosing your domain.
A good domain registrar should provide you the following features
-
No Cost Domain Forwarding - To Point your domain to anywhere you choose,
you can even use a long free web host url and forward your domain to it.
-
No Cost for Change of Registrant - Makes sure you can change registrars
(transfer out to another registrar) for your domain without paying a heavy
fee.
-
No Cost Domain Parking - You get one page saying your site is under
construction or something like that.
-
Domain Name Locking - makes sure that no one can initiate a transfer
request until you unlock your domain
-
DNS Server Changes - You should be able to login to your own control panel
and make any changes yourself
I use http://value-name.com for all my
domain needs, they provide 1 year registration for $8.75 and $7.75 for a domain
transfer including one year extension. They also have special prizing for bulk
registrations.
Trouble Shooting Domain Name Problems
What can you do if you have trouble setting up your domain? First of all,
remember that it may take up to 48 hours for your domain changes to propagate
across the internet. If you wish to verify the settings on any domain, you can
use our recommended
whois tool
The whois report on any domain will tell you about the current nameservers
attached to that domain in addition to the contact addresses, the registration
date, expiry date and the date when the last modifications were made to that
domain record. If the nameservers are not correct then you know you have to
change them by logging into your domain name control panel or by contacting your
registrar support. If the name servers that are shown are correct, then you can
use the nslookup
tool (Advanced DNS Lookup) from the same page to determine the ip address
being returned for your domain by any nameserver. Here you should enter one of
the nameserver that you find in the whois output and see what ip address it
returns for your domain name.
If it does not return an ip address then the nameserver has to be configured to
point your domain to the correct ip address, or you may be using the wrong
nameserver.
If it returns an ip address, You can try typing the ip address directly into the
address bar of your web browser, if it gives a 404 page not found error, then
either the ip address is wrong or the webserver is down. If it returns some
generic page but not your webpage, that is all right, this is to be expected
unless you are using a dedicated ip address. Make sure that the IP address
returned is the correct one that your web host is providing to you. If you are
sure that the ip address is correct and still your website does not show when
you type in your domain name in the address bar of your browser, then it may be
that other people are able to access your site and only you are not able to
access it because your local nameserver does not resolve your domain or resolves
it wrongly. In that case, if you can find out the nameserver your local machine
is using, you can enter that nameserver in the nslookup tool at and see what ip
address it is returning. If your local nameserver is returning the wrong ip
address all you need to do is wait till the dns changes propagate to your local
nameserver, If your local nameserver is returning the right ip address, then you
must contact your web host to inform them that their webserver is not configured
to handle your domain.
Conclusion
We have covered a lot of ground here, from registering a domain to
setting and trouble shooting it. Even if you never need to configure a domain,
understanding the concepts behind what goes on behind the scenes when you type
a domain name in your browser should make you feel good about yourself. And if
you are one of those people who eat domains for breakfast, this article should
give you a head start into the advanced configuration options available and with
a little practice, you will be well on your way to become a Jedi Knight of
domain management. May the force be with you, always.
By Mufad.
Join The Work at Home Community
http://biz-whiz.com
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