Cached · just now
76/100 SECURITY SCORE

Certificate Information

Subject
CN=coscheduler.com
Issuer
C=US, O=Let's Encrypt, CN=R12
Valid From
March 20, 2026
Valid Until
June 18, 2026 36 days
Public Key
RSA 4096 bit Strong
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
31:F6:D1:39:5A:16:7D:6E:03:06:14:64:62:75:3E:F8:13:78:2F:EC:67:51:21:A5:84:F1:69:48:8E:C1:EF:5C
Alternative Names

Security Configuration

TLS Protocols
TLS 1.2 TLS 1.3
Forward Secrecy
Supported (Modern clients use PFS)

HTTP Security Headers

Status
Strict-Transport-Security
Missing
Not configured
Content-Security-Policy
Missing
Not configured Analyze
Content-Security-Policy-Report-Only
Missing
Not configured Analyze
X-Frame-Options
Missing
Not configured
X-Content-Type-Options
Missing
Not configured
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
  • Add Strict-Transport-Security header with max-age of at least 1 year
  • Add Content-Security-Policy header to prevent XSS attacks
  • Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
  • Add X-Content-Type-Options: nosniff
  • Add Referrer-Policy header (recommended: strict-origin-when-cross-origin)
  • Consider adding Permissions-Policy to control browser features

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

Subject Alternative Names

90 domains
selter.de *.selter.de

Other domains in certificate

ainiporn.com *.ainiporn.com
australiantimber.com.au *.australiantimber.com.au *.ww25.australiantimber.com.au
batchaibakraub.com *.batchaibakraub.com
bestvacuum.com.au *.bestvacuum.com.au
coscheduler.com *.coscheduler.com
e2w3.com *.e2w3.com *.ebay.e2w3.com
ekekeee.com *.ekekeee.com
eportconsortium.org *.eportconsortium.org *.mail.eportconsortium.org
foodtruckcaravan.com *.foodtruckcaravan.com *.w.foodtruckcaravan.com
globalverticalgardening.com *.globalverticalgardening.com *.random.globalverticalgardening.com *.ww25.globalverticalgardening.com *.ww38.globalverticalgardening.com
kisstv.live *.kisstv.live
*.app.kushtycoon.net kushtycoon.net *.kushtycoon.net
mountaineers.com.au *.mountaineers.com.au
nbafc.net *.nbafc.net *.ww38.nbafc.net
okwin.life *.okwin.life
*.api.peccatidigola.it *.app.peccatidigola.it *.hostmaster.peccatidigola.it *.intelligence.peccatidigola.it peccatidigola.it *.peccatidigola.it *.remote.peccatidigola.it *.staging.peccatidigola.it *.superset.peccatidigola.it
*.alex.rarevintagetube.com *.board.rarevintagetube.com *.my.rarevintagetube.com rarevintagetube.com *.rarevintagetube.com *.s1.rarevintagetube.com *.stage.rarevintagetube.com *.ww25.rarevintagetube.com *.ww38.rarevintagetube.com
*.hostmaster.ruppert-lesite.com *.mail.ruppert-lesite.com *.ns1.ruppert-lesite.com *.ns2.ruppert-lesite.com ruppert-lesite.com *.ruppert-lesite.com
sagrada.bet *.sagrada.bet
singles1.com *.singles1.com
sportssurge.tv *.sportssurge.tv *.wildcard.sportssurge.tv *.ww25.sportssurge.tv *.ww38.sportssurge.tv
teebeemotorcycles.co.uk *.teebeemotorcycles.co.uk
tophatter.co *.tophatter.co
*.dbis.twobeansandafarm.com.au *.mail.twobeansandafarm.com.au twobeansandafarm.com.au *.twobeansandafarm.com.au *.ww25.twobeansandafarm.com.au *.ww38.twobeansandafarm.com.au
*.blog.wwwlifeextension.com *.insight.wwwlifeextension.com wwwlifeextension.com *.wwwlifeextension.com
xn--kieferhhlenentzndung-99b4l.de *.xn--kieferhhlenentzndung-99b4l.de