Open
Cached
·
just now
84/100
SECURITY SCORE
Detected Technologies
Certificate Information
Subject
CN=*.github.io
Issuer
C=US, O=Let's Encrypt, CN=YR1
Valid From
September 30, 2026
Valid Until
December 29, 2026
56 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
F2:F9:A1:59:CE:50:A0:A1:68:B3:EA:EA:F2:FC:ED:5A:DD:D4:9B:A3:8E:2B:F6:32:48:F0:57:A1:39:FC:78:56
Alternative Names
Security Configuration
TLS Protocols
TLS 1.2
TLS 1.3
Forward Secrecy
Supported
(Modern clients use PFS)
CAA Records (Certificate Authority Authorization)
CAA Records
Configured
(Restricts certificate issuance)
Current Issuer
Authorized
(Matches CAA policy)
Authorized CAs
Wildcard CAs
Recommendations
- • Consider using critical flag (flags=128) for stricter CAA enforcement
- • Consider adding 'iodef' records to receive notifications about unauthorized certificate issuance attempts