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SECURITY SCORE
Certificate Information
Subject
C=CN, ST=四川省, L=成都市, O=时时同云科技（成都）有限责任公司, CN=*.keruyun.com
Issuer
C=US, O=DigiCert, Inc., CN=GeoTrust G2 TLS CN RSA4096 SHA256 2022 CA1
Valid From
June 26, 2025
Valid Until
July 16, 2026
245 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
DF:18:A3:66:BF:56:15:78:F7:6A:6E:ED:86:B5:F2:F2:C6:05:AE:A1:B7:DB:3C:20:4E:04:E5:B4:DB:74:63:A5
Alternative Names
Security Configuration
TLS Protocols
TLS 1.0
TLS 1.1
TLS 1.2
TLS 1.3
Forward Secrecy
Supported
(Modern clients use PFS)
Warnings
- • TLS 1.1 is deprecated and should be disabled
- • TLS 1.0 is deprecated and should be disabled
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