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 |
|---|---|---|---|---|---|---|---|---|---|
| 2901 | simplepie.org | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 74 d |
| 2902 | sina.cn | A | 100 | — | – | TLS1.3 | GeoTrust G2 TLS CN RSA4096 SHA256 2022 CA1 | — | 55 d |
| 2903 | sina.com.cn | A | 100 | TLS1.3 | GeoTrust G2 TLS CN RSA4096 SHA256 2022 CA1 | — | 55 d | ||
| 2904 | sinaimg.cn | A | 100 | — | – | TLS1.3 | GeoTrust G2 TLS CN RSA4096 SHA256 2022 CA1 | — | 55 d |
| 2905 | sink.cool | A | 100 | — | – | TLS1.3 | Google Trust Services | — | 33 d |
| 2906 | sinonjs.org | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 74 d |
| 2907 | sipri.org | A | 100 | — | – | TLS1.3 | Sectigo Public Server Authentication CA DV R36 | — | 91 d |
| 2908 | siteground.com | A | 100 | — | – | TLS1.3 | Google Trust Services | — | 83 d |
| 2909 | sitejabber.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 83 d |
| 2910 | sitemaps.org | A | 100 | — | – | TLS1.3 | Microsoft TLS G2 RSA CA OCSP 10 | — | 77 d |
| 2911 | siu.edu | A | 100 | — | – | TLS1.3 | InCommon RSA Server CA 2 | — | 63 d |
| 2912 | sixapart.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 67 d |
| 2913 | skepdic.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 57 d |
| 2914 | skepticalscience.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 33 d |
| 2915 | sketchfab.com | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | 71 d | |
| 2916 | sketchup.com | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | — | 124 d |
| 2917 | skiddle.com | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | — | 103 d |
| 2918 | skillsyouneed.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 83 d |
| 2919 | skku.edu | A | 100 | — | – | TLS1.3 | Thawte TLS RSA CA G1 | — | 86 d |
| 2920 | skynet.be | A | 100 | — | – | TLS1.3 | GlobalSign RSA OV SSL CA 2018 | — | 30 d |
| 2921 | skynews.com.au | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | — | 124 d |
| 2922 | skype.com | A | 100 | — | – | TLS1.3 | Microsoft TLS G2 RSA CA OCSP 04 | — | 86 d |
| 2923 | skyrock.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 37 d |
| 2924 | skyscrapercity.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 35 d |
| 2925 | slashfilm.com | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | — | 125 d |
| 2926 | slashgear.com | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | — | 136 d |
| 2927 | slatestarcodex.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 71 d |
| 2928 | sli.do | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | — | 138 d |
| 2929 | slimframework.com | A | 100 | — | – | TLS1.3 | GandiCert | — | 172 d |
| 2930 | slovenia.info | A | 100 | — | – | TLS1.3 | GeoTrust TLS RSA CA G1 | — | 163 d |
| 2931 | smartadserver.com | A | 100 | — | – | TLS1.3 | Google Trust Services | — | 38 d |
| 2932 | smartraveller.gov.au | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 79 d |
| 2933 | smartsupp.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | 74 d | |
| 2934 | smarturl.it | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | — | 146 d |
| 2935 | smbc-comics.com | A | 100 | — | – | TLS1.3 | Google Trust Services | — | 88 d |
| 2936 | smith.edu | A | 100 | — | – | TLS1.3 | InCommon Intermediate CA - DVG2C | 185 d | |
| 2937 | smp.ne.jp | A | 100 | — | – | TLS1.3 | GlobalSign RSA OV SSL CA 2018 | — | 41 d |
| 2938 | smzdm.com | A | 100 | — | – | TLS1.3 | GeoTrust G2 TLS CN RSA4096 SHA256 2022 CA1 | — | 170 d |
| 2939 | sn.at | A | 100 | — | – | TLS1.3 | GeoTrust TLS RSA CA G1 | — | 36 d |
| 2940 | snazzymaps.com | A | 100 | — | – | TLS1.3 | Sectigo Public Server Authentication CA DV R36 | 107 d | |
| 2941 | snl.no | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 55 d |
| 2942 | soccerway.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 31 d |
| 2943 | social-plugins.line.me | A | 100 | — | – | TLS1.3 | GeoTrust TLS RSA CA G1 | — | 92 d |
| 2944 | socialworkers.org | A | 100 | — | – | TLS1.3 | GlobalSign Atlas R46 DV TLS CA 2026 Q3 | — | 64 d |
| 2945 | sofascore.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | 38 d | |
| 2946 | sofitel.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 61 d |
| 2947 | softbank.jp | A | 100 | — | – | TLS1.3 | Cybertrust Japan SureServer EV CA G3 | — | 48 d |
| 2948 | softwareadvice.com | A | 100 | — | – | TLS1.3 | Google Trust Services | — | 87 d |
| 2949 | sogou.com | A | 100 | — | – | TLS1.3 | DigiCert Secure Site OV G2 TLS CN RSA4096 SHA256 2022 CA1 | — | 52 d |
| 2950 | sohu.com | A | 100 | — | – | TLS1.3 | DigiCert Secure Site OV G2 TLS CN RSA4096 SHA256 2022 CA1 | — | 84 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.