⚠️ Caution: This is an early demo of our test updates for NCSC's 2025 TLS guidelines, to allow you to test against the new guidelines.

Some explanation text is still missing, out of date, or in rough draft state. Test evaluations may still change.
This URL is an active development environment and has limited availability - it may be down for hours or days.

Tests from this instance originate from different IPs than those used in production. If you use allowlisting on our production IPs, results may vary, particularly for email TLS. To include this instance, allowlist 62.204.66.0/26 and 2a00:d00:ff:162::/64.

Hall of Fame - Champions!

Badge with text: 100% score in website test Badge with text: 100% score in email test
The 30 domains below score 100% in both the website test and the email test. Inductees of this Hall of Fame are allowed to use both 100% badges.

100% in website and email test