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 |
|---|---|---|---|---|---|---|---|---|---|
| 2851 | sendgrid.com | A | 100 | — | – | TLS1.3 | Go Daddy Secure Certificate Authority - G2 | — | 115 d |
| 2852 | sendibm3.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 82 d |
| 2853 | sendibt3.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 83 d |
| 2854 | sendmail.org | A | 100 | — | – | TLS1.3 | Sectigo Public Server Authentication CA OV R36 | — | 178 d |
| 2855 | sensetime.com | A | 100 | — | – | TLS1.3 | GeoTrust G2 TLS CN RSA4096 SHA256 2022 CA1 | 35 d | |
| 2856 | seobook.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 62 d |
| 2857 | seoranko.de | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 67 d |
| 2858 | seositecheckup.com | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | — | 72 d |
| 2859 | seosthemes.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 83 d |
| 2860 | serif.com | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | — | 166 d |
| 2861 | serpro.gov.br | A | 100 | — | – | TLS1.3 | AC SERPRO AR46 OV TLS CA 2025 | — | 44 d |
| 2862 | service.gov.uk | A | 100 | — | – | TLS1.3 | GlobalSign RSA OV SSL CA 2018 | — | 53 d |
| 2863 | servicenow.com | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | — | 152 d |
| 2864 | servicesaustralia.gov.au | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 77 d |
| 2865 | sesamestreet.org | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | 187 d | |
| 2866 | setlist.fm | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | — | 186 d |
| 2867 | seuil.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 43 d |
| 2868 | sfgate.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | 62 d | |
| 2869 | sfmta.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | 57 d | |
| 2870 | sfsu.edu | A | 100 | — | – | TLS1.3 | Let's Encrypt | 52 d | |
| 2871 | sfu.ca | A | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | — | 177 d |
| 2872 | shanghaimac.com | A | 100 | — | – | TLS1.3 | Sectigo Public Server Authentication CA DV R36 | — | 54 d |
| 2873 | shanghairanking.com | A | 100 | — | – | TLS1.3 | vTrus DV SSL CA G2 | — | 57 d |
| 2874 | shangri-la.com | A | 100 | — | – | TLS1.3 | RapidSSL TLS RSA CA G1 | — | 69 d |
| 2875 | share.google | A | 100 | TLS1.3 | Google Trust Services | — | 55 d | ||
| 2876 | shareaholic.com | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 S18 | — | 196 d |
| 2877 | shareasale.com | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | — | 161 d |
| 2878 | sharepoint.com | A | 100 | TLS1.3 | Microsoft TLS G2 RSA CA OCSP 10 | — | 188 d | ||
| 2879 | shaw.ca | A | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | — | 155 d |
| 2880 | shbgvalve.com | A | 100 | — | – | TLS1.3 | sslTrus RSA DV SSL CA 2 | — | 135 d |
| 2881 | shein.com | A | 100 | — | – | TLS1.3 | DigiCert Secure Site OV G2 TLS CN RSA4096 SHA256 2022 CA1 | — | 77 d |
| 2882 | shewrites.com | A | 100 | — | – | TLS1.3 | GoDaddy TLS Intermediate CA DV - R1v1 | — | 60 d |
| 2883 | shinobi.jp | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 73 d |
| 2884 | shjyun.com | A | 100 | — | – | TLS1.3 | Xcc Trust DV SSL CA | — | 150 d |
| 2885 | shopping.com | A | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | — | 157 d |
| 2886 | shotcut.org | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | — | 118 d |
| 2887 | shrsl.com | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | — | 160 d |
| 2888 | shueisha.co.jp | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | — | 140 d |
| 2889 | shutterstock.com | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | — | 185 d |
| 2890 | sibforms.com | A | 100 | — | – | TLS1.3 | Google Trust Services | — | 89 d |
| 2891 | sic.gov.co | A | 100 | — | – | TLS1.3 | GlobalSign RSA OV SSL CA 2018 | — | 76 d |
| 2892 | siemens.com | A | 100 | — | – | TLS1.3 | Amazon ECDSA 256 M01 | — | 100 d |
| 2893 | siemens.de | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | — | 55 d |
| 2894 | siggraph.org | A | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | — | 141 d |
| 2895 | sigmaaldrich.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 59 d |
| 2896 | siliconangle.com | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | — | 117 d |
| 2897 | siliconrepublic.com | A | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | — | 141 d |
| 2898 | silverstripe.org | A | 100 | — | – | TLS1.3 | Sectigo Public Server Authentication CA DV R36 | — | 66 d |
| 2899 | simonwillison.net | A | 100 | — | – | TLS1.3 | Google Trust Services | — | 74 d |
| 2900 | simplebooklet.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 33 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.