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What is a Domain
Server and how does it Work?
A name server is a computer that holds
records of domain names and
corresponds them with IP addresses. Whenever a computer
browser tries
to access a domain name (www.yourdomain.com), it must
first query a
name server for the correct IP address. If the name server
that it
queries does not hold the record in question, it then
refers the query
to another name server from which it gets its name
information. This
process continues until the correct IP address is defined,
or an error
is returned.
A domain name server (also called DNS) is the Internet's
equivalent to a phone book. A domain name server
maintains a directory of domain names and their matching
IP addresses. This information allows other
computers to know where to go to find your website.
How? The information from
all the domain name servers across the Internet is
gathered into a Central Registry. Computer networks
across the world check in with the Central Registry on a
regular basis to get updates so they will know information
about your domain and where to find your domain name or
your website if you have one.
Without a domain name server and
the information it provides, computers wouldn't know where
to find your website or any other website.
It takes approximately 48 hours
for your new or modified information that is entered into
a domain name server to make it's way across the internet.
A program or computer that translates one type of name
into another. For example, a name server receives a query
about a domain name and then sends back the IP address for
that domain. .
Registering a business domain name (url), such as
www.your-business-name.com, reserves you a place on the
web to build your companies internet presence. Domain
names end in the following: ( .com
.net .biz )
By reserving all
the extensions your customers will be sure to find you
fast. It will also allow you to protect your popular name
from being exploited by your competitors. You can reserve
any name that is available for multiple years. Domain
server is the internet service provider that will provide
you with a physical location for your url.
Domain Name System
(DNS) A general-purpose distributed, replicated,
data query service chiefly used on Internet for
translating
hostnames into Internet addresses. Also, the style of
hostname used on the Internet, though such a name is
properly called a fully qualified domain name. DNS can be
configured to use a sequence of name servers, based on the
domains in the name being looked for, until a match is
found.
The name resolution client (e.g. Unix's gethostbyname()
library function) can be configured to search for host
information in the following order: first in the local
/etc/hosts file, second in NIS and third in DNS. This
sequencing of Naming Services is sometimes called
"name
service switching". Under Solaris is configured in
the file
/etc/nsswitch.conf.
DNS can be queried interactively using the command nslookup.
It is defined in STD 13, RFC 1034 and RFC 1035.
Domain Name System
BIND is a common DNS server.
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