If your website is managed by a webmaster, you should contact your webmaster in the subject.
If your site in not managed by a webmaster, Search engines (such as Google, Bing etc.) will automatically find your website after approximately one month.
Adding relevant links in relevant locations on your website would speed up the process and help search engines find your website.
An immediate way to make your site indexed by search engines is to sign up for the search engines webmaster tools.
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