Domain Name Server(DNS):
The purpose of DNS (Domain Name Server) is to translate domain names into IP addresses. Whenever we use a domain name, a service is used for translating domain names into IP addresses is known as DNS. For example: www.techbaz.org might translate to 220.127.116.11. So what DNS basically translate the domain name "techbaz" into corresponding address.
If one DNS sever does not know how to translate the particular domain name, it asks another DNS server and this process continue until the correct IP address is returned. As in the above example, if one domain server does not know how to translate - www.techbaz.org , it will move to another DNS until the corresponding IP address 18.104.22.168 is returned. DNS scheme uses alphabets and it is easier to remember, but actually each domain name has an address and DNS scheme is used to convert this domain name into its corresponding address.
The generic domain define registered hosts according to their generic behavior. Each to the tree defines a domain, which is an index to the domain name space database. the first level in the generic domain section allows seven possible three character labels.
Generic top-level domains(gTLDs):
|Government authorities (government)
|Organizations of the educational system (educational)
|Aviation industry (aeronautics)
|Specific professions (professional)
|Supporters/Users of the Catalan language and culture (catalan)
|Company job advertisements
|Company job advertisements
|For mobile-optimized websites (mobile)
|People, companies, and organizations in the travel industry
|People, companies, and organizations from the Asian/Pacific region
|Members of the Universal Postal Union
• More(huge amount) domains available on gTLDs.
The country domain section follows the same format as the generic domains but uses two-character country abbreviations (Example: "in" for "India") in place of the three-character organizational abbreviations at the first level. Second level labels can be organizational, or they can be more specific, national destination.
Country top-level domain(ccTLD):
|Wallis and Futuna
• More(country domains) domains available on ccTLDs.
The inverse domain is used to map an address to a name. This may happen, for example, when a server receive a request from a client to do a task. Whereas the server has a file that contains a list of authorized clients, the server lists only the IP address of the client. To determine if the client is on the authorized list, it can send a query to the DNS server and ask for a map ping of address to name.
Example of reverse DNS lookup:
- Given IP address: '127.0.0.1'
- Reverse DNS lookup might return a domain like 'host.example.com'.
Note: The term "inverse domain" is not commonly used in the context of DNS. However, you might be referring to the concept of reverse DNS lookup.
on: 28 Dec 2019
on: 10 Jan 2022
Featured postsYou may like these posts.
In the present days, wireless communication system has become an essential part of various types of wireless, many devices used wireless communication.
What is New?
We have just updated this website & still working on adding new content & updating existing features.