Web ratings

Web server

• https://www.ssllabs.com/ssltest/ - test SSL (HTTPS certificate, etc)
• https://securityheaders.io/ - test HTTP headers
• https://hstspreload.org/ - check HSTS and add it to preload list
• https://nat64check.ipv6-lab.net/ - check web server on IPv6 and Nat64

DNS records

• https://www.huque.com/bin/danecheck - check TLSA record
• https://caatest.co.uk/ - check CAA record
• http://dnsviz.net/ - check DNSSEC

Web

• https://developers.google.com/speed/pagespeed/ - site performance
• https://search.google.com/test/mobile-friendly - responsibility-test