DNS Gurus
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81/100 SECURITY SCORE

Certificate Information

Subject
C=US, ST=New York, L=New York, O=Yahoo Holdings Inc., CN=src3.yahoo.com
Issuer
C=US, O=DigiCert Inc, OU=www.digicert.com, CN=DigiCert SHA2 High Assurance Server CA
Valid From
June 24, 2025
Valid Until
December 17, 2025 30 days
Public Key
ECDSA 256 bit (P-256) Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
F0:92:37:55:AC:E5:8E:88:1A:6F:E8:F4:55:AC:82:E8:79:25:0E:D9:E4:1C:DE:FF:BC:2F:03:3B:C6:5F:54:81
Alternative Names
86 domains

Security Configuration

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

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