What is a domain name?
Domain names are the familiar, easy-to-remember names you find on the Internet, such as domainpeople.com.
Domain names correspond to a series of numbers called Internet Protocol numbers (or IP addresses) that serve as routing addresses on the Internet.
Imagine if people identified themselves by their phone numbers instead of their names. Domain names fill a similar purpose on the Internet and are much easier to remember than a series of numbers.
Domain names identify a specific network location on the Internet. It is your identity on the Internet and provides you with an address that other Internet users can use to find you on the World Wide Web.
Here are some domain names you might be familiar with:
asiapacific-it.com - Asia Pacific IT Ltd.
linux.org - Linux Online Inc.
microsoft.net - Microsoft Corporation
hkdnr.hk - the Hong Kong Internet Registration Authority (HKDNR)
What is an IP address?
Every computer on the Internet has a numeric address
called an IP Address, which is used to identify
the location of the computer. An example of an
IP address is 220.127.116.11. Each domain name
replaces this string of numbers with a simple
word or expression. Having a domain name means
you don't have to remember a cumbersome numeric
What is a DNS?
DNS stands for Domain Name Server (also referred to as Domain Name Service
or Domain Name System). A DNS translates domain names into IP addresses. If
someone wants to access Asia Pacific IT 's web site (www.asiapacific-it.com),
the DNS translates the domain name into its corresponding IP address 18.104.22.168,
allowing the computer to locate AsiaPacific IT's web server.
is a URL?
URL stands for Universal Resource Locator
and is a unique identifier for your
web address. Your URL contains your
domain name. An example of a URL is
No two web sites can have the same URL. Whoever
registers a domain name first gets to use it in
their URL. This is why it is important to register
your domain name before someone else does.
the components of a domain name?
A top-level domain (TLD) refers to the suffix
attached to Internet domain names. The most
common top-level domains used on the Internet
are .com, .net and .org.
Country Code Top-Level
Two letter top-level domains, such as .ca .uk,
.de and .jp, are called country code top level
domains (ccTLDs) and correspond to a country,
territory or other geographic location. The
rules and policies for registering domain names
in the ccTLDs vary significantly from country
to country and may be reserved for use by citizens
of the corresponding country. DomainPeople offers
The body of a domain name is called the second-level
domain. In domainpeople.com, "domainpeople"
represents a second-level domain within the
top level domain of .com.
You can also put another word in front of the
second level domain. For example, information.domainpeople.com.
or henry.domainpeople.com. In these examples
the words "information" and "henry"
are called "host" names or a "sub-domains".
You do not need to register a host or sub-domain
with a Registrar.
What is a Registrant?
The entity, organization, or individual listed
as the legal holder of the domain name is known
as the Registrant.
What is a Registrar?
The organization responsible for the actual registration
of the domain name is known as the Registrar.
is a Registry?/ What is ICANN?
Formed in October 1998, the Internet Corporation
for Assigned Names and Numbers (ICANN) is a non-profit,
private sector corporation formed by a broad co-alition
of the Internet's business, technical, academic,
and user communities. ICANN has been recognized
by the U.S. Government as the global consensus
entity to coordinate the technical management
of the Internet's domain name system, the allocation
of IP addresses, the assignment of protocol parameters,
and the management of the root server system.
ICANN is dedicated to preserve the operational
stability of the Internet; to promote competition;
to achieve broad representation of the global
Internet community; and to coordinate policy through
private sector, bottom-up, consensus-based means.
ICANN is located at http://www.ICANN.org.
The Hong Kong equivalent for .hk domain names, the Hong Kong Internet Registration
Authority (HKDNR) is located at http://www.hkdnr.hk/.
is an Administrative Contact?
The Administrative Contact is the person or organization
authorized by the domain name Registrant to act
on behalf of the legal entity listed as the owner
of the domain name. The Administrative Contact
should be able to answer non-technical questions
about the legal entity's plans for using the domain
name and the procedures for establishing sub-domains.
is a Billing Contact?
The Billing Contact is the person or organization
that will be invoiced for registrations and renewals
of the domain name.
is a Technical Contact?
The Technical Contact is the person or organization
that maintains the domain name Registrant's primary
name server and resolves software, and database
files. The Technical Contact keeps the name server
running and interacts with technical people in
other domains to solve problems that affect the
domain name. An Internet Service Provider often
performs this role. If the Technical or Billing
Contact information is missing from the Registration
Agreement, it is presumed that the domain name
Registrant has authorized the Administrative Contact/Agent
to act as the Technical Contact.
In many cases, a single person will be the registrant
and sole contact for a domain name.