Extensions are the last 3 letters at the end of a domain name, such as .COM or .NET. These can have specific uses, so make sure to choose one that suits for your business. .COM is far and away the most popular, but here are some other top extensions and how they're often used:
.co : an abbreviation for company and community
.info : informational sites
.net : technical, Internet infrastructure sites
.org : non-commercial organizations and non-profits
.biz : business or commercial use, like ecommerce sites
.me : blogs, resumes or personal sites
Tip: You don't need to build a website for every domain. Just forward any additional domains to your primary website.
