DNS Gurus
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79/100 SECURITY SCORE

Certificate Information

Subject
C=US, ST=Washington, L=Redmond, O=Microsoft Corporation, CN=outlook.com
Issuer
C=US, O=DigiCert Inc, CN=DigiCert Cloud Services CA-1
Valid From
November 10, 2025
Valid Until
November 09, 2026 353 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
39:35:BF:CC:EC:88:80:E3:C4:5B:DE:DF:90:CF:5D:28:7F:E6:38:0D:1A:BD:72:B6:D3:06:E3:F6:4F:CD:3A:A4
Alternative Names
23 domains

Security Configuration

TLS Protocols
TLS 1.2
Forward Secrecy
Limited (Check cipher configuration)
Warnings
  • • TLS 1.3 is not supported (recommended)

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