How DNS Works
The Domain Name System, otherwise known as DNS, is a key component of the Internet. DNS is the resolution of a knowledge domain mention to an IP address. For those of you who are not mindful of how it works, read on to learn the basics .
There are two approaches to DNS lookups :
- The “normal” or forward DNS lookup command, and
- The reverse DNS lookup command
Forward DNS Lookups
The forward search, or childlike DNS search, is the most normally used approach to DNS. The forward approach to DNS is plainly finding out the IP address of a sphere. People tend to find it unmanageable to remember farseeing strings of numbers. rather, it ‘s easier to remember a domain appoint that uses words, like ‘google.com ‘ rather than ‘220.127.116.11. ‘
Reading: DNS Lookup
however, electronic devices use streams of 1s and 0s to communicate. The only direction for one computer to communicate with another is by singular designation. The method acting of identification used on the Internet is IP addresses.
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here are the simple steps for DNS solution :
- A user enters a domain name into their Internet browser, like www.whatismyip.com.
- The computer sends the domain name as a DNS request to the user’s Internet Service Provider (ISP).
- The ISP determines if it has the IP address associated with that name.
- If it does not, the ISP forwards the request to other providers in an effort to locate the DNS record that contains the data.
- Once the record is found, the IP address of the domain is returned to the user.
- Now, the user’s computer can communicate directly with the server.
many people compare DNS to a phonebook, which is an oversimplification of a very building complex system. The worldly concern wide web provides the fundamental routine of inter-connectivity, which is much more than the telephone relays of earlier .
Reverse DNS Lookup
In a reversion DNS search, the steps are the like except that it starts out with an IP address and returns with the knowledge domain diagnose. In reality, this can take a while. And when a DNS is unable to find what it needs, whether it is a sphere list or an IP cover, we end up with the sieve we all hate that states that “ this web page can not be found. ” This is due to the servers being busy or the web browser timing out .