Open
Cached
·
just now
93/100
SECURITY SCORE
Certificate Information
Subject
C=US, ST=Pennsylvania, O=IONOS Inc., CN=mail.ionos.com
Issuer
C=GB, O=Sectigo Limited, CN=Sectigo Public Server Authentication CA OV R36
Valid From
September 24, 2025
Valid Until
September 24, 2026
238 days
Public Key
RSA
3072 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
53:A5:C0:2B:B6:8C:76:08:BC:B7:B4:37:7D:F3:52:F0:BD:03:1A:8A:73:3F:82:52:F6:DB:C8:B6:A6:4C:68:AD
Alternative Names
Security Configuration
TLS Protocols
TLS 1.2
Forward Secrecy
Limited
(Check cipher configuration)
Warnings
- • TLS 1.3 is not supported (recommended)
HTTP Security Headers
Status
Strict-Transport-Security
Good
max-age=31536000 ; includeSubDomains
Content-Security-Policy
Strong
default-src; img-src; font-src; +8 more
default-src 'self' frontend-services.ionos.com; img-src 'self' data: *.ionos.com *.uicdn.net; font-src 'self' cors.uicdn.net ce1.uicdn.net; script-src 'nonce-cU6MWexLLlWneTSLwcjo1UbmuHy2yPPHQy53xFDZBXg=' 'strict-dynamic' 'self' tif.ionos.com ce1.uicdn.net var.uicdn.net; style-src 'self' frontend-services.ionos.com ce1.uicdn.net var.uicdn.net 'nonce-cU6MWexLLlWneTSLwcjo1UbmuHy2yPPHQy53xFDZBXg='; frame-src data: 'self' *.ionos.com; child-src data: 'self' *.ionos.com; connect-src 'self' ahab.ionos.com sherlock.us.ac1.server.lan sherlock.ionos.com sentry.ionos.com hed.ionos.com navigation.ionos.com frontend-services.ionos.com t.ionos.com l4wxddfpxjw0.statuspage.io ias.ionos.com; base-uri 'self'; object-src 'none'; frame-ancestors 'none';
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
strict-origin-when-cross-origin
Permissions-Policy
Present
accelerometer=(), ambient-light-sensor=(), autoplay=(), battery=(), camera=(), cross-origin-isolated=(), display-capture=(), document-domain=(), encrypted-media=(), execution-while-not-rendered=(), execution-while-out-of-viewport=(), fullscreen=*, geolocation=(), gyroscope=(), keyboard-map=(), magnetometer=(), microphone=(), midi=(), navigation-override=(), payment=(), picture-in-picture=(), publickey-credentials-get=(), screen-wake-lock=(), sync-xhr=(self), usb=(), web-share=(), xr-spatial-tracking=()
Recommendations
- • Consider adding 'preload' to HSTS for maximum security
CAA Records (Certificate Authority Authorization)
CAA Records
Not Configured
(Any CA can issue certificates)
CAA Issues
- • No CAA records configured - any CA can issue certificates
Recommendations
- • Implement CAA records to restrict which CAs can issue certificates for your domain
- • This adds an extra layer of security against unauthorized certificate issuance
- • Example: Add CAA record 'example.com. CAA 0 issue "letsencrypt.org"'
- • Consider adding 'iodef' record to receive security incident reports