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 |
|---|---|---|---|---|---|---|---|---|---|
| 4251 | cartier.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 52 d | |
| 4252 | carto.com | A+ | 100 | — | – | TLS1.3 | Sectigo Public Server Authentication CA DV R36 | 81 d | |
| 4253 | cas.org | A+ | 100 | — | – | TLS1.3 | Sectigo Public Server Authentication CA OV R36 | 152 d | |
| 4254 | case.edu | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 59 d | |
| 4255 | casimba-casino.com | A+ | 100 | — | – | TLS1.3 | Google Trust Services | 71 d | |
| 4256 | casino.org | A+ | 100 | — | – | TLS1.3 | Google Trust Services | 66 d | |
| 4257 | castrol.com | A+ | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 161 d | |
| 4258 | catawiki.com | A+ | 100 | — | – | TLS1.3 | DigiCert Global G3 TLS ECC SHA384 2020 CA1 | 140 d | |
| 4259 | cathaypacific.com | A+ | 100 | — | – | TLS1.3 | DigiCert Global G3 TLS ECC SHA384 2020 CA1 | 56 d | |
| 4260 | catholic.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 77 d | |
| 4261 | catholic.org | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 66 d | |
| 4262 | cato.org | A+ | 100 | — | – | TLS1.3 | GlobalSign Atlas R46 DV TLS CA 2026 Q3 | 51 d | |
| 4263 | cbc.ca | A+ | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 76 d | |
| 4264 | cbo.gov | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 66 d | |
| 4265 | cbp.gov | A+ | 100 | — | – | TLS1.3 | DigiCert Global G3 TLS ECC SHA384 2020 CA1 | 94 d | |
| 4266 | cbs.dk | A+ | 100 | — | – | TLS1.3 | GEANT TLS RSA 1 | 102 d | |
| 4267 | cbs.nl | A+ | 100 | — | – | TLS1.3 | DigiCert G2 TLS EU RSA4096 SHA384 2022 CA1 | 37 d | |
| 4268 | cbs12.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | 77 d | |
| 4269 | cbs6albany.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | 77 d | |
| 4270 | cbs8.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 75 d | |
| 4271 | cbsaustin.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | 77 d | |
| 4272 | ccbill.com | A+ | 100 | — | – | TLS1.3 | Thawte TLS RSA CA G1 | 79 d | |
| 4273 | cdc.gov | A+ | 100 | TLS1.3 | DigiCert Global G3 TLS ECC SHA384 2020 CA1 | 133 d | |||
| 4274 | cdlib.org | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | 127 d | |
| 4275 | cegid.com | A+ | 100 | — | – | TLS1.3 | Thawte TLS RSA CA G1 | 41 d | |
| 4276 | celebritycruises.com | A+ | 100 | — | – | TLS1.3 | GeoTrust TLS RSA CA G1 | 105 d | |
| 4277 | centos.org | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 66 d | |
| 4278 | centrepompidou.fr | A+ | 100 | — | – | TLS1.3 | RapidSSL TLS RSA CA G1 | 181 d | |
| 4279 | cepa.org | A+ | 100 | — | – | TLS1.3 | Google Trust Services | 72 d | |
| 4280 | cepal.org | A+ | 100 | — | – | TLS1.3 | Google Trust Services | 54 d | |
| 4281 | cerebras.ai | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 46 d | |
| 4282 | ceros.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 81 d | |
| 4283 | ces.tech | A+ | 100 | — | – | TLS1.3 | GlobalSign Atlas R46 DV TLS CA 2026 Q3 | 31 d | |
| 4284 | cfainstitute.org | A+ | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 181 d | |
| 4285 | cff.org | A+ | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 60 d | |
| 4286 | cgi.com | A+ | 100 | — | – | TLS1.3 | Sectigo Public Server Authentication CA OV R40 | 162 d | |
| 4287 | cgiar.org | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | 167 d | |
| 4288 | cgsecurity.org | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 79 d | |
| 4289 | cgtrader.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | 42 d | |
| 4290 | ch.ch | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 62 d | |
| 4291 | chadd.org | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 62 d | |
| 4292 | chainalysis.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | 129 d | |
| 4293 | challenges.fr | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | 177 d | |
| 4294 | change.org | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | 140 d | |
| 4295 | channel3000.com | A+ | 100 | — | – | TLS1.3 | Google Trust Services | 46 d | |
| 4296 | channelnewsasia.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 61 d | |
| 4297 | chaos.social | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 57 d | |
| 4298 | charite.de | A+ | 100 | — | – | TLS1.3 | GEANT TLS ECC 1 | 61 d | |
| 4299 | charlotte.edu | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 54 d | |
| 4300 | charlottetilbury.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | 168 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.