Millions of users browse the internet by typing domain names in the search box of internet such engines like Google, Bing and AOL. Then the browser and technology does its magic and you get the website you requested.
Domain name is actually is structured label which is connected to a specific IP or internet protocol address of a server where the web page is being hosted. Domain is a structure label that has at least two components: The actual domain name and the TLD or top level domain.
Let’s consider a fictitious domain name:
In the above example, “fitnesszip” is the domain name and .com is the TLD, also known as domain name extension. You must have seen some other TLDs like .net, .org, .gov, .info, .app, .date, .us etc.
Domains fall under the jurisdiction of ICANN or Internet Corporation for Assigned Names and Numbers, which is responsible for creating new and maintaining current top level domains.
A second level domain is a specific part of a website, page domain name or URL address that complements a TLD. It consists of the portion of domain name to the left of TLD. For example, in sportick.com, sportick is second level domain or SLD. Then we have country code SLD or ccSLD. Here, the second level domain is actually to the right of the decimal delineator. For example, in www.google.co.ca, the country code TLD is “ca” whereas the ccSLD is “co”.
What is DNS and how does it work?
DNS or Domain Name System is a set of specialized DNS servers having database of domains. These severs, also known as name servers, serve as a phone book to connect IP addresses with the corresponding domain names.
You will never like to remember or type the IP address consisting of number dot number dot number sequence, like 192.168.255.275, instead it will be much easier to type the domain name like “socialmove”. When you enter the domain name in the address bar, the browser searches through the DNS system to find the exact IP address you are looking for.
If you try to open socialmove.com, the browser will first go to root DNS records and try to find the name servers within .com TLD. It will then go to the first server on the list and try to find the actual IP address which is connected to socialmove.com. Once the IP address is found, the browser will open up the website socialmove.com to you.
DNS records must be kept updated
DNS records are important part of domain registration and ongoing maintenance. As DNS record varies on a per-host basis, it must be changed every time a new host is chosen and migrated to. Failure to do so will cause the domain to look in an old location for the website’s files, which will most often result in 404 or “Page not found” error. There could be page loading error as well and no content will be displayed at all.
When signing up for a new domain host, pay special attention to any new Email which lists new domain server records. They are often paired with an IP address and may even be given only an IP address instead of a special domain name. They must be changed immediately upon receipt as it may take a full business day for DNS record to take effect all over the world.
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