|A domain name is simply a string of alphanumeric characters which identifies a specific webpage on the World Wide Web. A unique domain name identifies a website, rather than a physical thing. This is very different from a domain which describes a physical item, such as a piece of property.|
The DNS works like this because it keeps a list of IP addresses which are linked together. The Domain Name System (Dns) is part of the networking infrastructure, giving users a way to identify websites that they are looking for. Any internet service which supports domain name resolution uses one or more servers to provide this service. Nameservers and server programs use this data to turn up the relevant information for your query. Most people know about Name Servers but not about DNS servers, and vice versa.
For the uninitiated, a domain name system combines a DNS server and a Nameserver. The DNS server is responsible for looking up addresses from the DNS database and passing them on to your client. Nameservers are also responsible for passing on addresses to clients, but don't actually store the addresses they have registered. The DNS and Nameserver are designed in tandem to co-exist peacefully, with one functioning as a service to provide fast and efficient connection to the internet while the other provides a distributed database to hold information about all registered domain names.
An IP address is a series of numbers which uniquely identifies every computer on the network. The most common type of IP address is a domain name, but there are also sub-ip addresses and multi-domain addresses. The major difference between the two is the length of the IP address, which is always a number in the range of 32-bit or hexadecimal. Domain name servers contain a list of domain names that each point to a specific IP address. When you connect to a domain name server, you are actually passing a request to that server rather than a list of IP addresses.
The dns protocol is responsible for translating your request for a domain name into an IP address. An IP address consists of four bytes:
The DNS server will return a zone file. This zone file is used by the DNS server and clients to find information about domain names. In order to find this information, the DNS server will ask for information about the whois command it has received. The whois command is used to identify the owner of the domain. The whois command is sent from the DNS server to the domain name client and the zone files are returned to the client in reply.
Names returned from the DNS server contain the IP address, the name of the domain name that is associated with that IP, the name of the domain name, and finally, the numeric value that uniquely identifies the domain. It also includes optional fields such as the host name, the domain name, the numerical IP address, the authorization codes, and finally, the other zone files. There are two different types of zones: global and regional. Global zones are applied to all domain names that are listed in the WHOIS database. Regional zones are applied to names within a specified region, such as for example, names that are located in the United States. There are also special zones that allow companies to specify their companies' localized languages.
There are many reasons why people need to perform a DNS lookup. When you are trying to resolve a domain name, you can look up information about the domain names associated with it by typing in the full domain name, followed by the @ symbol, in an Internet browser. There are free online and paid dns resolution tools available to help you find the information you need. You can use a free lookup tool that connects to DNS servers around the world to search for names and addresses, or you can use a paid lookup tool that searches through the major DNS resolver databases. A good DNS Resolver has the ability to not only look up names and addresses, but also to combine information from DNS servers and DNS lookup directories.