SSL Grade Leaderboard: Top 100 Websites
Scanned from 20,000 top global websites · Updated 2026-11-07
| # | Domain | Grade | Score | 30d trend | Δ | TLS | Issuer | HSTS | Expires |
|---|---|---|---|---|---|---|---|---|---|
| 6651 | ungeneva.org | A+ | 100 | — | – | TLS1.3 | Sectigo Public Server Authentication CA DV R36 | 147 d | |
| 6652 | unglobalcompact.org | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | 117 d | |
| 6653 | unhabitat.org | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 82 d | |
| 6654 | uni-augsburg.de | A+ | 100 | — | – | TLS1.3 | GEANT TLS RSA 1 | 92 d | |
| 6655 | uni-bamberg.de | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 72 d | |
| 6656 | uni-bayreuth.de | A+ | 100 | — | – | TLS1.3 | GEANT TLS ECC 1 | 92 d | |
| 6657 | uni-bonn.de | A+ | 100 | — | – | TLS1.3 | GEANT TLS ECC 1 | 192 d | |
| 6658 | uni-bremen.de | A+ | 100 | — | – | TLS1.3 | GEANT TLS RSA 1 | 101 d | |
| 6659 | uni-frankfurt.de | A+ | 100 | — | – | TLS1.3 | GEANT TLS ECC 1 | 189 d | |
| 6660 | uni-greifswald.de | A+ | 100 | — | – | TLS1.3 | GEANT TLS ECC 1 | 93 d | |
| 6661 | uni-heidelberg.de | A+ | 100 | — | – | TLS1.3 | GEANT TLS RSA 1 | 36 d | |
| 6662 | uni-hohenheim.de | A+ | 100 | — | – | TLS1.3 | GEANT TLS RSA 1 | 194 d | |
| 6663 | uni-jena.de | A+ | 100 | — | – | TLS1.3 | GEANT TLS ECC 1 | 92 d | |
| 6664 | uni-kassel.de | A+ | 100 | — | – | TLS1.3 | GEANT TLS ECC 1 | 145 d | |
| 6665 | uni-marburg.de | A+ | 100 | — | – | TLS1.3 | GEANT TLS RSA 1 | 188 d | |
| 6666 | uni-muenster.de | A+ | 100 | — | – | TLS1.3 | GEANT TLS ECC 1 | 93 d | |
| 6667 | uni-osnabrueck.de | A+ | 100 | — | – | TLS1.3 | GEANT TLS RSA 1 | 93 d | |
| 6668 | uni-regensburg.de | A+ | 100 | — | – | TLS1.3 | GEANT TLS RSA 1 | 91 d | |
| 6669 | uni-saarland.de | A+ | 100 | — | – | TLS1.3 | GEANT TLS ECC 1 | 92 d | |
| 6670 | uni-stuttgart.de | A+ | 100 | — | – | TLS1.3 | GEANT TLS RSA 1 | 173 d | |
| 6671 | uni-tuebingen.de | A+ | 100 | — | – | TLS1.3 | GEANT TLS RSA 1 | 173 d | |
| 6672 | uni-ulm.de | A+ | 100 | — | – | TLS1.3 | GEANT TLS RSA 1 | 104 d | |
| 6673 | uni-weimar.de | A+ | 100 | — | – | TLS1.3 | GEANT TLS ECC 1 | 108 d | |
| 6674 | unibe.ch | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 37 d | |
| 6675 | unical.it | A+ | 100 | — | – | TLS1.3 | GEANT TLS RSA 1 | 135 d | |
| 6676 | unicamp.br | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 51 d | |
| 6677 | unice.fr | A+ | 100 | — | – | TLS1.3 | GEANT TLS RSA 1 | 175 d | |
| 6678 | unicef.de | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 54 d | |
| 6679 | unicef.org | A+ | 100 | — | – | TLS1.3 | Thawte TLS RSA CA G1 | 53 d | |
| 6680 | unicefusa.org | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 64 d | |
| 6681 | unifr.ch | A+ | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 71 d | |
| 6682 | unige.it | A+ | 100 | — | – | TLS1.3 | GEANT TLS ECC 1 | 135 d | |
| 6683 | uniklinik-freiburg.de | A+ | 100 | — | – | TLS1.3 | GEANT TLS RSA 1 | 188 d | |
| 6684 | unil.ch | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 57 d | |
| 6685 | uniprot.org | A+ | 100 | — | – | TLS1.3 | Sectigo Public Server Authentication CA OV R36 | 173 d | |
| 6686 | unir.net | A+ | 100 | — | – | TLS1.3 | GandiCert | 159 d | |
| 6687 | unisg.ch | A+ | 100 | — | – | TLS1.3 | Sectigo Public Server Authentication CA DV R36 | 68 d | |
| 6688 | unistra.fr | A+ | 100 | — | – | TLS1.3 | GEANT TLS ECC 1 | 96 d | |
| 6689 | united-domains.de | A+ | 100 | — | – | TLS1.3 | Sectigo Public Server Authentication CA EV R36 | 91 d | |
| 6690 | unitedhealthgroup.com | A+ | 100 | — | – | TLS1.3 | Sectigo Public Server Authentication CA OV R36 | 152 d | |
| 6691 | unitedway.org | A+ | 100 | — | – | TLS1.3 | GeoTrust TLS RSA CA G1 | 168 d | |
| 6692 | univ-amu.fr | A+ | 100 | — | – | TLS1.3 | GEANT TLS ECC 1 | 162 d | |
| 6693 | univ-paris8.fr | A+ | 100 | — | – | TLS1.3 | GEANT TLS ECC 1 | 170 d | |
| 6694 | universal-music.co.jp | A+ | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 151 d | |
| 6695 | universalmusic.com | A+ | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 156 d | |
| 6696 | universalorlando.com | A+ | 100 | — | – | TLS1.3 | DigiCert Global G3 TLS ECC SHA384 2020 CA1 | 154 d | |
| 6697 | universalstudioshollywood.com | A+ | 100 | — | – | TLS1.3 | DigiCert Global G3 TLS ECC SHA384 2020 CA1 | 154 d | |
| 6698 | universia.net | A+ | 100 | — | – | TLS1.3 | GlobalSign Atlas R46 DV TLS CA 2026 Q4 | 73 d | |
| 6699 | universityofgalway.ie | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | 188 d | |
| 6700 | univision.com | A+ | 100 | — | – | TLS1.3 | Google Trust Services | 60 d |
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FAQ
How often is the SSL leaderboard updated?
Watched domains are scanned daily; the top-20K leaderboard refreshes full snapshots every Sunday.
How is the SSL grade calculated?
Protocol versions, cipher strength, certificate validity, HSTS and OCSP stapling are weighted into a 0-100 score, mapped to grades from A+ to F.
What does an A+ SSL rating mean?
A near-perfect TLS setup: TLS 1.3 enabled, strong cipher suites, full forward secrecy (PFS) and correctly deployed HSTS.
Methodology
CertH grades each domain via pure TLS handshakes (no server access required): certificate validity, key strength, protocol versions, HSTS and OCSP stapling are scored with a deduction model (100 minus itemized penalties) into a 0-100 score mapped to six grades from A+ to F. Daily snapshots accumulate into an auditable health trend.
What is an SSL grade?
An SSL grade (A+ through F) evaluates a website's overall TLS configuration: protocol versions, cipher strength, certificate validity and trust chain, HSTS and OCSP stapling. A higher grade means stronger resistance to man-in-the-middle attacks and data breaches.
Why track certificate health over time?
Expired certificates, CA switches and configuration regressions can silently drag a grade down. CertH daily snapshots record those changes so you can spot risk before failures, with auditable history as evidence.