CertH certH

hal.science SSL Score & TLS Health Report

A+ 100/100
View the in-depth report on SSL Labs
Issuer
GEANT TLS RSA 1
Max TLS
TLS1.3
TLS versions
TLS 1.3 TLS 1.2 TLS 1.1 TLS 1.0
Cipher
ECDHE-RSA-AES256-GCM-SHA384
Expires
4/29/2027 ( 176 d)
HSTS
✓ Enabled
OCSP Stapling
Disabled
Last scanned
11/4/2026, 12:03:02 PM
SSL tools Certificate Inspector SSL handshake tracer Certificate Transparency lookup

Report summary

hal.science currently holds an SSL grade of A+ (100/100) from CertH TLS health monitoring. The site supports TLS1.3, TLS1.2, has HSTS enabled, and its certificate is issued by GEANT TLS RSA 1 — 176 days left on the certificate. CertH records daily TLS handshake probes into an auditable certificate health trend.

Excellent — A near-perfect setup: TLS 1.3, strong ciphers, full forward secrecy (PFS) and correctly enabled HSTS. First choice for finance, payments and other high-stakes businesses.

hal.science scores higher than 99% of the 12,269 sites we grade.

Percentile is computed over the 12,269 sites CertH has indexed (including ungraded ones), not an industry census.

Full certificate & config details

Common Name
*.hal.science
Key
rsaencryption 3072bit
Sig Hash
SHA-256
Chain
Complete
SAN
*.hal.science · hal.science
Fingerprint
093d2a5503ec3352e554dc4ece6f1069edea9cc779bd9e23705c699f3e089900
Explain variables
CAA
issue "harica.gr" · issue "letsencrypt.org" · iodef "mailto:ccsd-tech@ccsd.cnrs.fr" · issuewild "harica.gr" · issuewild "letsencrypt.org"
CT SCT
3
Must-Staple
✗
HSTS preloadable
✗
Risk flags
No notable risks

What’s working

  • TLS 1.3 enabled
  • HSTS enabled with a long max-age
  • Complete certificate chain
  • No legacy TLS or weak ciphers

Score trend

02550751009/8/2026, 6:29:51 PM · 97 (A+)9/9/2026, 8:11:33 PM · 95 (A)11/4/2026, 12:03:02 PM · 100 (A+)

Recent history

TimeGrade ScoreIssuer
11/4/2026, 12:03:02 PMA+100GEANT TLS RSA 1
9/9/2026, 8:11:33 PMA95GEANT TLS RSA 1
9/8/2026, 6:29:51 PMA+97Hellenic Academic and Research Institutions CA

Score change insights · Last 90 days

Net change ↑ +5
  • ↑
    11/4/2026 +5 A → A+
    Certificate rotatedTLS version support improved
    Also observedCAA: — → issue "harica.gr", issue "letsencrypt.org", iodef "mailto:ccsd-tech@ccsd.cnrs.fr", issuewild "harica.gr", issuewild "letsencrypt.org"

FAQ

When does hal.science’s certificate expire?

hal.science’s certificate expires on 4/29/2027, in 176 days, issued by GEANT TLS RSA 1.

Is hal.science’s TLS configuration secure?

hal.science currently scores A+ (100/100). It negotiates TLS1.3, TLS1.2 and has HSTS enabled.

Why did hal.science’s score change?

11/4/2026: +5 points — Certificate rotated · TLS version support improved