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Does a Web server certificate secure both “www.domainnamegoeshere.com” and “domainnamegoeshere.com”?

April 26, 2017Certificate domainnamegoeshere.com Secure web server www.domainnamegoeshere.com

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Does a Web server certificate secure both “www.domainnamegoeshere.com” and “domainnamegoeshere.com”?

1 Answer

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No, a Web server certificate only secures the exact fully qualified domain entered as the Common Name in your certificate signing request. Thus if your certificate secures “www.domainnamegoeshere.com” it will not secure the domain “domainnamegoeshere.com.” If a user types in “domainnamegoeshere.com” (without the “www”) he/she will receive a warning about the validity of the certificate. If you need to secure both domains you must request a Web server certificate for each of them. Alternatively, you can contact your domain registrar and request that your DNS records are set up that typing in “domainnamegoeshere.com” automatically resolves to “www.domainnamegoeshere.com.