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 |
|---|---|---|---|---|---|---|---|---|---|
| 4351 | cloudconvert.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | 60 d | |
| 4352 | cloudera.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 79 d | |
| 4353 | cloudflare.com | A+ | 100 | TLS1.3 | Google Trust Services | 87 d | |||
| 4354 | clubic.com | A+ | 100 | — | – | TLS1.3 | ZeroSSL ECC DV SSL CA 2 | 84 d | |
| 4355 | cmbchina.com | A+ | 100 | — | – | TLS1.3 | GeoTrust G2 TLS CN RSA4096 SHA256 2022 CA1 | 112 d | |
| 4356 | cms.gov | A+ | 100 | — | – | TLS1.3 | GeoTrust TLS RSA CA G1 | 195 d | |
| 4357 | cna.com.tw | A+ | 100 | — | – | TLS1.3 | Google Trust Services | 82 d | |
| 4358 | cnb.cool | A+ | 100 | — | – | TLS1.3 | DigiCert Secure Site OV G2 TLS CN RSA4096 SHA256 2022 CA1 | 131 d | |
| 4359 | cncf.io | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 50 d | |
| 4360 | cnmc.es | A+ | 100 | — | – | TLS1.3 | AC SERVIDORES SEGUROS TIPO2 G2R | 141 d | |
| 4361 | cnrs.fr | A+ | 100 | — | – | TLS1.3 | GEANT TLS RSA 1 | 94 d | |
| 4362 | coach.com | A+ | 100 | — | – | TLS1.3 | DigiCert Global G3 TLS ECC SHA384 2020 CA1 | 84 d | |
| 4363 | coda.io | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | 64 d | |
| 4364 | code.org | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | 152 d | |
| 4365 | coderwall.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 47 d | |
| 4366 | codingame.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | 177 d | |
| 4367 | cognizant.com | A+ | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 78 d | |
| 4368 | cohere.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 77 d | |
| 4369 | coinbase.com | A+ | 100 | — | – | TLS1.3 | Google Trust Services | 85 d | |
| 4370 | coinmarketcap.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | 67 d | |
| 4371 | college-de-france.fr | A+ | 100 | — | – | TLS1.3 | GEANT TLS RSA 1 | 41 d | |
| 4372 | collegeboard.org | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 41 d | |
| 4373 | coloradoan.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 83 d | |
| 4374 | coloradosun.com | A+ | 100 | — | – | TLS1.3 | Google Trust Services | 31 d | |
| 4375 | commercialappeal.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 83 d | |
| 4376 | commonapp.org | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | 123 d | |
| 4377 | comparethemarket.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | 87 d | |
| 4378 | comparitech.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 46 d | |
| 4379 | comscore.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | 144 d | |
| 4380 | comunidad.madrid | A+ | 100 | — | – | TLS1.3 | GlobalSign RSA OV SSL CA 2018 | 120 d | |
| 4381 | concordia.ca | A+ | 100 | — | – | TLS1.3 | GlobalSign RSA OV SSL CA 2018 | 34 d | |
| 4382 | concordmonitor.com | A+ | 100 | — | – | TLS1.3 | Google Trust Services | 78 d | |
| 4383 | conductor.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 83 d | |
| 4384 | connpass.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | 155 d | |
| 4385 | conseil-constitutionnel.fr | A+ | 100 | — | – | TLS1.3 | Sectigo Public Server Authentication CA EV R36 | 195 d | |
| 4386 | consumentenbond.nl | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | 168 d | |
| 4387 | consumeraffairs.com | A+ | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 126 d | |
| 4388 | consumercal.org | A+ | 100 | — | – | TLS1.3 | Starfield TLS Intermediate CA DV - R1v1 | 71 d | |
| 4389 | consumerfinance.gov | A+ | 100 | — | – | TLS1.3 | DigiCert Global G3 TLS ECC SHA384 2020 CA1 | 191 d | |
| 4390 | contently.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | 128 d | |
| 4391 | contentsquare.com | A+ | 100 | — | — | TLS1.3 | Let's Encrypt | 0 d | |
| 4392 | continental-tires.com | A+ | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 75 d | |
| 4393 | continental.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 59 d | |
| 4394 | converse.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | 173 d | |
| 4395 | convertio.co | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | 191 d | |
| 4396 | cookiefirst.com | A+ | 100 | — | – | TLS1.3 | Sectigo Public Server Authentication CA DV R36 | 40 d | |
| 4397 | cookieyes.com | A+ | 100 | — | – | TLS1.3 | Google Trust Services | 78 d | |
| 4398 | cornerstoneondemand.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 72 d | |
| 4399 | correiobraziliense.com.br | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 77 d | |
| 4400 | corteva.com | A+ | 100 | — | – | TLS1.3 | GlobalSign Atlas R46 DV TLS CA 2026 Q3 | 55 d |
Track grade changes for your domains
Sign up free, watch your domains and get alerted the moment a grade drops.
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.