Add-On Domains, Parked Domains and Sub-Domains

Once you have a website up and running, you may want to launch other
websites
. The default way to do it is to register new domain names and
open new hosting accounts. However, opening new hosting accounts can be
expensive, especially if you still have plenty of free space and bandwidth
available in your original account. Fortunately, it is possible to
share the web space and bandwidth of your original account
among different sites.

You can basically do so through:


  • Add-On Domains
  • Parked Domains, and
  • Sub-Domains

What is an Add-On Domain?


An add-on domain is a new domain name that points to a
subdirectory within your existing domain hosting account, where the website for
the new domain will reside. Add-on domains must be registered domain names that
you own, and that are configured to point to your web host's
servers.

From a web user perspective, an add-on domain
functions just like any other domain. For example, if you
already have a hosting account under www.main-domain.com, you can register and
set up an add-on domain (for example: www.add-on-domain.com), so that when your
visitors type "http://www.add-on-domain.com" in their browser, they will be
transported to the new site.

The advantage of add-on domains is that the
browser's address bar will show "http://www.add-on-domain.com" (there will be no
reference to the original domain), so the process will be totally
transparent
to your users. If your users navigates to another page,
their browser will accordingly show
"http://www.add-on-domain.com/anotherpage.html", just like it should.


Apart from sharing web space and bandwidth with your main domain, add-on
domains also get their own cgi-bin and
statistics.

Many web hosts now offer to set-up add-on
domains for free. This is only fair, since you are not getting any more web
space or bandwidth. Others, however, will charge you a modest one time fee,
which is not bad, especially when the cost of registering the new domain is
included. Finally, some web hosts will charge you a montly fee for each add-on
domain you set up. In some cases, that fee can be very close to the monthly cost
of your web hosting account, to the point that it is better to just open a new
hosting account for the new domain. If you plan to set up add-on domains in the
future, you're better off avoiding this kind of account.


What is a Parked Domain?


A parked domain is a domain that doesn't have a hosting
account associated to it, and that is usually enabled with URL
forwarding
capabilities, so that it points to an existing website. For
example, let's assume that you already run a newsletter that is hosted in a
subdirectory of your domain name, as follows:
"http://www.domain.com/newsletter/index.html". You may at one given point want
to register a separate domain name for your newsletter, so that it is more
memorable, but may not want to move its pages to a new server, open a new
hosting account, or pay to establish an add-on domain. You can then register a
and park a new domain for your newsletter (for example:
"http://www.newsletter.com"), which will be forwarded to
"http://www.domain.com/newsletter/index.html".

You don't need to
register this new domain with the same company that hosts your website. You can
register it with any domain registrar (preferrably one that offers free URL
forwarding) and point it to the physical location of the pages.

The
difference between a parked domain and an add-on
domain
from a web user's perspective is that with a parked domain the
URL in the address bar will change to the physical location of
the page as the page loads. For example, if you type
"http://www.newsletter.com", that domain won't remain in the browser address
bar, but will change to "http://www.domain.com/newsletter/index.html" as soon as
the page is displayed.

From a webmaster's perspective, the difference is
that the parked domain won't have its own separate statistics reported through
the control panel of your hosting account.

If you are a good observer,
you may have probably noticed that my newsletter domain
"http://www.theinternetdigest.net" is parked and points to the physical location
of my newsletter pages, which is
"http://www.accordmarketing.com/tid/".

Parked domains are also a good
alternative for webmasters whose site is hosted by a free hosting
service
, since by using a memorable parked domain users won't need to
remember the cumbersome web addresses usually associated with free hosting
accounts.

They are also widely used by members of affiliate
programs
, who forward the parked domain to the merchant pages, so that
they don't have to use an affiliate URL that includes their affiliate id (which
turns many people off).


What is a Sub-Domain?


A subdomain, also known as a "third-level" domain, is a
great way to create memorable web addresses for various
sub-sites of your site. For instance, Yahoo! uses subdomains
for its different services, like "mail.yahoo.com", "music.yahoo.com", etc. The
basic syntax is: "http://subdomain.domain.com".

Large
businesses use subdomains to establish branding and focus on
separate products or services, because a subdomain creates a separate URL and
web presence, all within your same main hosting account. For example, a
restaurant directory may establish sub-domains for different cities, or a school
can set up subdomains for different academic programs.

It is also
possible to redirect (forward) traffic from a particular subdomain to another
location, either within the main site or to a different website altogether.


You should be able to set up and manage add-on domains, parked domains
and subdirectories from your hosting account or domain registrar control
panel
. However, as we usually suggest, always consult with your web
host before proceeding if you have any doubts.



Mario Sanchez is a Miami
based freelance writer who focuses on Internet marketing and web design topics. 
He publishes The Internet Digest ( href="http://www.theinternetdigest.net">http://www.theinternetdigest.net ),
a growing collection of web design and Internet marketing articles, tips and
resources.  You can freely reprint his weekly articles in your website, ezine,
or ebook.