SSL Grade Leaderboard: Top 100 Websites
Scanned from 20,000 top global websites · Updated 2026-11-04
| # | Domain | Grade | Score | 30d trend | Δ | TLS | Issuer | HSTS | Expires |
|---|---|---|---|---|---|---|---|---|---|
| 401 | coolblue.nl | A | 100 | — | — | TLS1.3 | Amazon RSA 2048 M04 | — | 113 d |
| 402 | coolermaster.com | A | 100 | — | — | TLS1.3 | GeoTrust TLS RSA CA G1 | — | 123 d |
| 403 | coop.co.uk | A | 100 | — | — | TLS1.3 | GlobalSign Atlas R46 DV TLS CA 2026 Q3 | — | 16 d |
| 404 | copernicus.eu | A | 100 | — | — | TLS1.3 | Amazon RSA 2048 M01 | — | 0 d |
| 405 | copyblogger.com | A | 100 | — | — | TLS1.3 | Let's Encrypt | — | 0 d |
| 406 | corning.com | A | 100 | — | — | TLS1.3 | DigiCert Global G3 TLS ECC SHA384 2020 CA1 | — | 64 d |
| 407 | cos.com | A | 100 | — | — | TLS1.3 | DigiCert Global G3 TLS ECC SHA384 2020 CA1 | — | 10 d |
| 408 | costar.com | A | 100 | — | — | TLS1.3 | DigiCert EV RSA CA G2 | — | 114 d |
| 409 | coubic.com | A | 100 | — | — | TLS1.3 | Amazon RSA 2048 M01 | — | 68 d |
| 410 | counter-strike.net | A | 100 | — | — | TLS1.3 | Let's Encrypt | — | 0 d |
| 411 | courtlistener.com | A | 100 | — | — | TLS1.3 | Amazon RSA 2048 M04 | — | 111 d |
| 412 | cps.ca | A | 100 | — | — | TLS1.3 | Let's Encrypt | — | 3 d |
| 413 | cpsc.gov | A | 100 | — | — | TLS1.3 | GeoTrust TLS RSA CA G1 | — | 64 d |
| 414 | cracked.com | A | 100 | — | — | TLS1.3 | Amazon RSA 2048 M04 | — | 137 d |
| 415 | craftsy.com | A | 100 | — | — | TLS1.3 | Amazon RSA 2048 M01 | — | 110 d |
| 416 | crave.ca | A | 100 | — | — | TLS1.3 | Entrust OV TLS Issuing ECC CA 2 | — | 130 d |
| 417 | crazystarcasino.org | A | 100 | — | — | TLS1.3 | Encryption Everywhere DV TLS CA - G2 | — | 30 d |
| 418 | createsend1.com | A | 100 | — | — | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | — | 113 d |
| 419 | createspace.com | A | 100 | — | — | TLS1.3 | Amazon RSA 2048 M01 | — | 112 d |
| 420 | creative.com | A | 100 | — | — | TLS1.3 | Amazon RSA 2048 M01 | — | 3 d |
| 421 | creativemornings.com | A | 100 | — | — | TLS1.3 | Amazon RSA 2048 M01 | — | 114 d |
| 422 | creator-spring.com | A | 100 | — | — | TLS1.3 | ZeroSSL ECC DV SSL CA 2 | — | 0 d |
| 423 | creditkarma.com | A | 100 | — | — | TLS1.3 | DigiCert EV RSA CA G2 | — | 0 d |
| 424 | crisistextline.org | A | 100 | — | — | TLS1.3 | Let's Encrypt | — | 0 d |
| 425 | criteo.com | A | 100 | — | — | TLS1.3 | Let's Encrypt | 10 d | |
| 426 | crontab.guru | A | 100 | — | — | TLS1.3 | Amazon RSA 2048 M04 | — | 89 d |
| 427 | crossfit.com | A | 100 | — | — | TLS1.3 | Amazon RSA 2048 M01 | — | 113 d |
| 428 | crossref.org | A | 100 | — | — | TLS1.3 | Amazon RSA 2048 M01 | — | 51 d |
| 429 | crystalmark.info | A | 100 | — | — | TLS1.3 | Let's Encrypt | — | 0 d |
| 430 | csod.com | A | 100 | — | — | TLS1.3 | Let's Encrypt | — | 33 d |
| 431 | csszengarden.com | A | 100 | — | — | TLS1.3 | Let's Encrypt | — | 22 d |
| 432 | csuohio.edu | A | 100 | — | — | TLS1.3 | Let's Encrypt | 0 d | |
| 433 | ctpost.com | A | 100 | — | — | TLS1.3 | Let's Encrypt | 0 d | |
| 434 | ctv.ca | A | 100 | — | — | TLS1.3 | Entrust OV TLS Issuing ECC CA 2 | — | 130 d |
| 435 | culturemap.com | A | 100 | — | — | TLS1.3 | GlobalSign Atlas R3 DV TLS CA 2025 Q4 | — | 47 d |
| 436 | curtin.edu.au | A | 100 | — | — | TLS1.3 | Amazon RSA 2048 M04 | — | 73 d |
| 437 | cushmanwakefield.com | A | 100 | — | — | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | — | 21 d |
| 438 | customink.com | A | 100 | — | — | TLS1.3 | Amazon RSA 2048 M04 | — | 38 d |
| 439 | cwru.edu | A | 100 | — | — | TLS1.3 | Let's Encrypt | — | 2 d |
| 440 | cyberscoop.com | A | 100 | — | — | TLS1.3 | Amazon RSA 2048 M04 | — | 17 d |
| 441 | cybersecuritynews.com | A | 100 | — | — | TLS1.3 | Let's Encrypt | — | 29 d |
| 442 | dailyfinance.com | A | 100 | — | — | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | — | 15 d |
| 443 | dailyherald.com | A | 100 | — | — | TLS1.3 | GlobalSign Atlas R46 DV TLS CA 2026 Q2 | — | 0 d |
| 444 | dailymail.co.uk | A | 100 | — | — | TLS1.3 | DigiCert Global G3 TLS ECC SHA384 2020 CA1 | — | 12 d |
| 445 | dailymail.com | A | 100 | — | — | TLS1.3 | DigiCert Global G3 TLS ECC SHA384 2020 CA1 | — | 12 d |
| 446 | dallasnews.com | A | 100 | — | — | TLS1.3 | Let's Encrypt | — | 0 d |
| 447 | darty.com | A | 100 | — | — | TLS1.3 | Sectigo Public Server Authentication CA OV E36 | 45 d | |
| 448 | databox.com | A | 100 | — | — | TLS1.3 | Sectigo Public Server Authentication CA DV R36 | — | 19 d |
| 449 | datacamp.com | A | 100 | — | — | TLS1.3 | Amazon RSA 2048 M01 | — | 0 d |
| 450 | daveramsey.com | A | 100 | — | — | TLS1.3 | Amazon RSA 2048 M01 | — | 136 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 weighted 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.