SSL Grade Leaderboard: Top 100 Websites
Scanned from 20,000 top global websites · Updated 2026-11-08
| # | Domain | Grade | Score | 30d trend | Δ | TLS | Issuer | HSTS | Expires |
|---|---|---|---|---|---|---|---|---|---|
| 9851 | screwfix.com | A | 95 | — | – | TLS1.2 | GlobalSign GCC R3 DV TLS CA 2020 | — | 92 d |
| 9852 | searchengines.guru | A | 95 | — | – | TLS1.2 | RapidSSL TLS ECC CA G1 | — | 193 d |
| 9853 | sebi.gov.in | A | 95 | — | – | TLS1.2 | Sectigo Public Server Authentication CA DV R36 | — | 69 d |
| 9854 | seclists.org | A | 95 | — | – | TLS1.3 | Let's Encrypt | — | 39 d |
| 9855 | secunia.com | A | 95 | — | – | TLS1.2 | Let's Encrypt | — | 62 d |
| 9856 | seek.com | A | 95 | — | – | TLS1.2 | Amazon RSA 2048 M04 | 143 d | |
| 9857 | seek.com.au | A | 95 | — | – | TLS1.2 | Amazon RSA 2048 M04 | 143 d | |
| 9858 | seesaa.net | A | 95 | — | – | TLS1.2 | Let's Encrypt | — | 32 d |
| 9859 | sega.jp | A | 95 | — | – | TLS1.2 | Amazon RSA 2048 M01 | — | 192 d |
| 9860 | semana.com | A | 95 | — | – | TLS1.2 | Amazon RSA 2048 M04 | — | 95 d |
| 9861 | sensnow.com.cn | A | 95 | — | – | TLS1.2 | Encryption Everywhere DV TLS CA - G2 | — | 49 d |
| 9862 | sf.gov | A | 95 | — | – | TLS1.2 | ZeroSSL RSA DV SSL CA 2 | — | 85 d |
| 9863 | sfgov.org | A | 95 | — | – | TLS1.2 | ZeroSSL RSA DV SSL CA 2 | — | 86 d |
| 9864 | sh.gov.cn | A | 95 | — | – | TLS1.2 | SHECA OV Server CA G5 | — | 41 d |
| 9865 | shacknews.com | A | 95 | — | – | TLS1.2 | Amazon RSA 2048 M04 | — | 156 d |
| 9866 | shanghai.gov.cn | A | 95 | — | – | TLS1.2 | SHECA OV Server CA G5 | — | 41 d |
| 9867 | shanghufang.com | A | 95 | — | – | TLS1.2 | Encryption Everywhere DV TLS CA - G2 | — | 30 d |
| 9868 | shawlocal.com | A | 95 | — | – | TLS1.2 | Amazon RSA 2048 M04 | — | 84 d |
| 9869 | shgjp.net | A | 95 | — | – | TLS1.2 | Let's Encrypt | — | 52 d |
| 9870 | shimano.com | A | 95 | — | – | TLS1.2 | GeoTrust TLS RSA CA G1 | — | 91 d |
| 9871 | shinyapps.io | A | 95 | — | – | TLS1.2 | Amazon RSA 2048 M04 | — | 44 d |
| 9872 | shippingexplorer.net | A | 95 | — | – | TLS1.2 | Let's Encrypt | — | 85 d |
| 9873 | shmoop.com | A | 95 | — | – | TLS1.2 | Amazon RSA 2048 M04 | 93 d | |
| 9874 | shopwjl.com | A | 95 | — | – | TLS1.2 | Encryption Everywhere DV TLS CA - G2 | — | 63 d |
| 9875 | shsu.edu | A | 95 | — | – | TLS1.2 | GlobalSign RSA OV SSL CA 2018 | 72 d | |
| 9876 | shure.com | A | 95 | — | – | TLS1.2 | Go Daddy Secure Certificate Authority - G2 | — | 93 d |
| 9877 | shz.de | A | 95 | — | – | TLS1.2 | Amazon RSA 2048 M04 | 138 d | |
| 9878 | siemens-energy.com | A | 95 | — | – | TLS1.2 | Amazon RSA 2048 M01 | 78 d | |
| 9879 | siemens-healthineers.com | A | 95 | — | – | TLS1.2 | Amazon RSA 2048 M01 | 187 d | |
| 9880 | silive.com | A | 95 | — | – | TLS1.2 | Amazon RSA 2048 M04 | — | 122 d |
| 9881 | similarweb.com | A | 95 | — | – | TLS1.2 | Amazon RSA 2048 M01 | 159 d | |
| 9882 | simplenet.com | A | 95 | — | – | TLS1.2 | Sectigo Public Server Authentication CA DV R36 | 77 d | |
| 9883 | sina.com | A | 95 | — | – | TLS1.2 | GeoTrust G2 TLS CN RSA4096 SHA256 2022 CA1 | — | 37 d |
| 9884 | singlecare.com | A | 95 | — | – | TLS1.2 | Amazon RSA 2048 S24 | — | 193 d |
| 9885 | sinolight.cn | A | 95 | — | – | TLS1.2 | GeoTrust G2 TLS CN RSA4096 SHA256 2022 CA1 | — | 51 d |
| 9886 | sirmar.com | A | 95 | — | – | TLS1.2 | TuringSign RSA Secure CA 2 | — | 75 d |
| 9887 | sitew.com | A | 95 | — | – | TLS1.2 | Let's Encrypt | — | 83 d |
| 9888 | sixthtone.com | A | 95 | — | — | TLS1.2 | Encryption Everywhere DV TLS CA - G2 | — | 51 d |
| 9889 | sizzlejs.com | A | 95 | — | – | TLS1.2 | Google Trust Services | — | 81 d |
| 9890 | skitterphoto.com | A | 95 | — | – | TLS1.2 | Let's Encrypt | — | 28 d |
| 9891 | slides.com | A | 95 | — | – | TLS1.2 | Amazon RSA 2048 M01 | — | 109 d |
| 9892 | sltrib.com | A | 95 | — | – | TLS1.2 | Amazon RSA 2048 M01 | 93 d | |
| 9893 | smart.com | A | 95 | — | – | TLS1.2 | Amazon RSA 2048 M04 | — | 168 d |
| 9894 | smartertravel.com | A | 95 | — | – | TLS1.2 | Let's Encrypt | — | 42 d |
| 9895 | smashwords.com | A | 95 | — | – | TLS1.2 | Sectigo Public Server Authentication CA DV R36 | 173 d | |
| 9896 | smh.com.au | A | 95 | — | – | TLS1.2 | Sectigo Public Server Authentication CA OV R36 | 152 d | |
| 9897 | smithsonianmag.com | A | 95 | — | – | TLS1.2 | Amazon RSA 2048 S24 | — | 193 d |
| 9898 | snapfiles.com | A | 95 | — | – | TLS1.2 | Let's Encrypt | — | 82 d |
| 9899 | sncf-connect.com | A | 95 | — | – | TLS1.2 | Amazon RSA 2048 M01 | 137 d | |
| 9900 | sncf.com | A | 95 | — | – | TLS1.2 | Amazon RSA 2048 M01 | — | 137 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.