The most used domain extensions are “.com”, “.net”, “.org”, “.edu”.
However, if you are going to start a blog, business or any kind of profitable website, then I highly recommend you go with the .com domain extension.
You may notice when somebody tells a website’s name for the first time, we usually access the website with the .com extension. This is because it’s so popular.
You may wonder if there is any SEO benefit of choosing a .com domain. If you are asking so, then in a domain name, the only thing that matters is the domain, not the extension. These extensions were created to differentiate different kinds of websites.
.com – .com is used for commercial businesses or any profitable websites. For example, Apple.com.
.net – .net stands for “networking”, which was created for network-related websites, such as, slideshare.net.
.edu – This extension is mostly used by education-related websites. For example, harvard.edu.
.org – Non-profit organizations mostly use the .org extension, such as Wikipedia.org.
Now, you can understand which type of domain extension suits your site. If you have a website for the purpose of making a profit, then go with the .com domain. The .com extension is so popular; it looks like all the good .com domains are already taken. In this case, you need to come up with new domain names or go with .net or .org.