sem-cls.cz
HTML metadata
Technology
- Server
- openresty
- Stack
- PHP
Third-party hosts loaded (1)
- media.meditorial.cz×3
DNS records live
- NS
-
- ns1.websupport.cz
- ns2.websupport.cz
- ns3.websupport.eu
Email authentication no MX
- SPF
- not published
- DMARC
- not published
- DKIM
- no key found at common selectors
Certificate (current)
E7
Expires in 67 days
HTTP security headers
- present
-
- strict-transport-security
- findings
-
- missing Content Security Policy
- missing frame protection
- missing content type protection
- missing Referrer Policy
- missing Permissions Policy
Header values
- strict-transport-security
max-age=63072000; preload