SSL Grade Leaderboard: Top 100 Websites
Scanned from 20,000 top global websites · Updated 2026-11-06
| # | Domain | Grade | Score | 30d trend | Δ | TLS | Issuer | HSTS | Expires |
|---|---|---|---|---|---|---|---|---|---|
| 3001 | ssrn.com | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | — | 128 d |
| 3002 | st.com | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | — | 153 d |
| 3003 | stackshare.io | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 41 d |
| 3004 | stadt-koeln.de | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 66 d |
| 3005 | stamfordadvocate.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | 39 d | |
| 3006 | staples.com | A | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | — | 140 d |
| 3007 | star-telegram.com | A | 100 | — | – | TLS1.3 | Google Trust Services | — | 63 d |
| 3008 | starbucks.co.jp | A | 100 | — | – | TLS1.3 | GlobalSign RSA OV SSL CA 2018 | 145 d | |
| 3009 | startersites.io | A | 100 | — | – | TLS1.3 | Google Trust Services | — | 51 d |
| 3010 | startribune.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 85 d |
| 3011 | stat.gov.pl | A | 100 | — | – | TLS1.3 | Certum OV TLS G2 R39 CA | — | 64 d |
| 3012 | statewatch.org | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 38 d |
| 3013 | statssa.gov.za | A | 100 | — | – | TLS1.3 | GlobalSign Atlas R46 DV TLS CA 2026 Q3 | — | 61 d |
| 3014 | statuspage.io | A | 100 | — | – | TLS1.3 | Amazon ECDSA 256 M04 | — | 194 d |
| 3015 | stcloudstate.edu | A | 100 | — | – | TLS1.3 | GeoTrust TLS RSA CA G1 | — | 129 d |
| 3016 | stdaily.com | A | 100 | — | – | TLS1.3 | vTrus OV SSL CA G2 | — | 70 d |
| 3017 | steamcommunity.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 46 d |
| 3018 | steamgames.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 46 d |
| 3019 | steampowered.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 46 d |
| 3020 | stedelijk.nl | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | — | 176 d |
| 3021 | steiermark.at | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 30 d |
| 3022 | stellarium.org | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 83 d |
| 3023 | stem.org.uk | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 43 d |
| 3024 | stihi.ru | A | 100 | — | – | TLS1.3 | GlobalSign GCC R46 DV TLS CA 2025 | — | 177 d |
| 3025 | stjohns.edu | A | 100 | — | – | TLS1.3 | GlobalSign RSA OV SSL CA 2018 | 65 d | |
| 3026 | stjude.org | A | 100 | — | – | TLS1.3 | GeoTrust TLS RSA CA G1 | — | 149 d |
| 3027 | stlouisfed.org | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 48 d |
| 3028 | stlpr.org | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | — | 190 d |
| 3029 | stockcharts.com | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | — | 128 d |
| 3030 | stockholmresilience.org | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 84 d |
| 3031 | stocksnap.io | A | 100 | — | – | TLS1.3 | Google Trust Services | — | 65 d |
| 3032 | stolaf.edu | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 85 d |
| 3033 | stores.jp | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | — | 94 d |
| 3034 | straight.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 76 d |
| 3035 | stratfor.com | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | — | 65 d |
| 3036 | strato.de | A | 100 | — | – | TLS1.3 | Sectigo Public Server Authentication CA OV R36 | — | 127 d |
| 3037 | streamlit.app | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 42 d |
| 3038 | streetinsider.com | A | 100 | — | – | TLS1.3 | Google Trust Services | — | 88 d |
| 3039 | streetmap.co.uk | A | 100 | — | – | TLS1.3 | Sectigo Public Server Authentication CA DV R36 | — | 73 d |
| 3040 | stripes.com | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | — | 75 d |
| 3041 | stthomas.edu | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | — | 172 d |
| 3042 | stubhub.com | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | — | 144 d |
| 3043 | studocu.com | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | — | 70 d |
| 3044 | studyrama.com | A | 100 | — | – | TLS1.3 | GandiCert | — | 170 d |
| 3045 | stv.tv | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | — | 133 d |
| 3046 | style.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 52 d |
| 3047 | stylecraze.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 70 d |
| 3048 | subito.it | A | 100 | — | – | TLS1.3 | GeoTrust TLS RSA CA G1 | — | 114 d |
| 3049 | substackcdn.com | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | — | 68 d |
| 3050 | subway.com | A | 100 | — | – | TLS1.3 | DigiCert Global G3 TLS ECC SHA384 2020 CA1 | — | 63 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.