The set of identifying information entered when creating a CSR is known as the known as the Subject DN (Distinguished Name). For example, a CSR for an SSL/TLS certificate may contain the following fields: • Common Name (CN): The Fully Qualified Domain Name (FQDN) of the website the certificate is intended to protect. • Organization (O): The name of a company or organization. • City/Locality (L): The name of a city or town. • State/Province (S): The name of a state or province. • Country (C): A two-letter country code. Note that only the Common Name field is required by SSL.com when submitting a CSR for an SSL/TLS certificate, and the others are optional. For more information about the Common Name, please refer to this FAQ. A CSR also contains a public key, and also may include SAN entries with additional domain names to be protected by the certificate.