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Here’s what does to support relevant federal standards and recommendations, for applications on * and custom domains.

IPv6 ensures all applications are accessible over IPv6. You don’t have to take any action.

HTTPS ensures all applications are accessible only over HTTPS with HTTP Strict Transport Security (HSTS) headers in accordance with the HTTPS-Only Standard. Any HTTP requests are permanantly redirected to HTTPS. You don’t have to take any action.

HSTS preloading sets Strict-Transport-Security headers for all applications by default, and has added the domain/subdomains to the HSTS preload list for most major browsers.

You are responsible for setting up HSTS preloading for your custom domain. doesn’t set this up for you. If you need HSTS preloading, follow the guidance from the maintainers of the HSTS preload list. The HTTPS-Only Standard encourages HSTS preloading.

Additional details are available in the FedRAMP P-ATO documentation package, including in System Security Plan controls SC-8, SC-12, and SC-20.

DNSSEC does not currently support DNSSEC on domains. For example, an application at * would not support DNSSEC.

If you need DNSSEC for your custom domain, you are responsible for configuring DNSSEC in your DNS system. can’t configure DNSSEC for you because does not have access to your DNS system. supports mapping your DNSSEC-enabled custom domain to your applications hosted on – see DNSSEC support for the CDN service and DNSSEC support for the custom domain service.

Additional details are available the System Security Plan, including controls SC-20, SC-21, SC-22, and SC-23.