DNS Gurus
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81/100 SECURITY SCORE

Certificate Information

Subject
C=US, ST=New York, L=Armonk, O=International Business Machines Corporation, CN=ibm.com
Issuer
C=US, O=DigiCert Inc, CN=DigiCert Global G3 TLS ECC SHA384 2020 CA1
Valid From
May 16, 2025
Valid Until
May 16, 2026 193 days
Public Key
ECDSA 256 bit (P-256) Adequate
Signature Algorithm
ECDSA-SHA384
SHA-256 Fingerprint
11:F8:A2:49:5B:83:80:14:85:7A:E4:70:32:98:0D:0F:E0:04:F0:37:0A:1A:02:BE:87:09:F7:4F:8B:2B:4D:81
Alternative Names
29 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