Your website is not added to search engines automatically. There are many different ways on how you can add your website to search engines such as Google, Bing or Yahoo. Some scripts like WordPress offer Plugins that add your website automatically.
For more information on how to add your website to search engines, please refer to these articles:
- https://support.google.com/webmasters/answer/6259634?hl=en (Google)
- https://search.yahoo.com/info/submit.html (Yahoo)
- http://www.bing.com/toolbox/submit-site-url (Bing)