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If you have a website, you might have heard about something called a CNAME record. But what is it, and how does it work? Let's break it down.
A CNAME record is a type of DNS record that allows you to associate one domain name with another. DNS stands for Domain Name System, and it's what helps the internet connect users with websites using easy-to-remember domain names instead of IP addresses.
In a way, a CNAME record acts like a shortcut or an alias for a domain name. It's similar to the way you might create a shortcut on your computer desktop to quickly access a frequently used program or file.
For example, let's say you have a website that you've hosted on a server, and the domain name associated with it is "example.com". However, you also want to create a subdomain called "blog.example.com" and have it point to a different server or hosting provider. You can create a CNAME record that associates "blog.example.com" with the IP address or domain name of the new server, and anyone who types in "blog.example.com" in their browser will be redirected to the new server.
When you create a CNAME record, you're essentially telling the DNS resolver to associate a domain name with another domain name. The CNAME record maps one domain name to another, which means that when someone types in the first domain name, their device or computer will look up the IP address associated with the second domain name and then connect to the server hosting that website.
For instance, let's say you have a website hosted on a server with the IP address 192.168.0.1, and the domain name associated with it is "example.com". You also have a subdomain called "blog.example.com" that you want to redirect to a different server with the IP address 192.168.0.2. You can create a CNAME record that associates "blog.example.com" with the domain name of the new server, such as "newserver.com".
When someone types in "blog.example.com" in their browser, their device or computer will first look up the IP address associated with "blog.example.com". Since "blog.example.com" is a CNAME record, it will then look up the IP address associated with "newserver.com" and connect to the server with that IP address. This server will then send back the webpage that the user requested.
There are several reasons why you might use a CNAME record:
In summary, a CNAME record is a type of DNS record that allows you to associate one domain name with another. It acts like a shortcut or an alias for a domain name and allows you to redirect subdomains, create custom URLs, load balance traffic, and migrate websites. By understanding how CNAME records work, you can make the most of your domain name and ensure that your website is accessible and reliable for your users.
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