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 |
|---|---|---|---|---|---|---|---|---|---|
| 301 | cartoonnetwork.com | A | 100 | — | — | TLS1.3 | Amazon RSA 2048 M04 | — | 88 d |
| 302 | casimba-casino.com | A | 100 | — | — | TLS1.3 | Let's Encrypt | — | 24 d |
| 303 | casinia.bet | A | 100 | — | — | TLS1.3 | Encryption Everywhere DV TLS CA - G2 | — | 15 d |
| 304 | casino.com | A | 100 | — | — | TLS1.3 | GlobalSign Atlas R3 DV TLS CA 2025 Q3 | 4 d | |
| 305 | casinoclassics.org | A | 100 | — | — | TLS1.3 | Encryption Everywhere DV TLS CA - G2 | — | 30 d |
| 306 | casinonic.io | A | 100 | — | — | TLS1.3 | Let's Encrypt | — | 24 d |
| 307 | casinoofgold.net | A | 100 | — | — | TLS1.3 | Encryption Everywhere DV TLS CA - G2 | — | 30 d |
| 308 | cast.org | A | 100 | — | — | TLS1.3 | Let's Encrypt | 32 d | |
| 309 | cat.com | A | 100 | — | — | TLS1.3 | Let's Encrypt | — | 0 d |
| 310 | caterpillar.com | A | 100 | — | — | TLS1.3 | Let's Encrypt | — | 0 d |
| 311 | cathaypacific.com | A | 100 | — | — | TLS1.3 | DigiCert Global G3 TLS ECC SHA384 2020 CA1 | — | 59 d |
| 312 | catholic.net | A | 100 | — | — | TLS1.3 | Let's Encrypt | — | 21 d |
| 313 | cazinostars.org | A | 100 | — | — | TLS1.3 | Encryption Everywhere DV TLS CA - G2 | — | 30 d |
| 314 | cbd.int | A | 100 | — | — | TLS1.3 | Amazon RSA 2048 M04 | — | 52 d |
| 315 | cbinsights.com | A | 100 | — | — | TLS1.3 | Amazon RSA 2048 M04 | — | 72 d |
| 316 | cbn.com | A | 100 | — | — | TLS1.3 | Let's Encrypt | 21 d | |
| 317 | cbs17.com | A | 100 | — | — | TLS1.3 | Let's Encrypt | 14 d | |
| 318 | cbs42.com | A | 100 | — | — | TLS1.3 | Let's Encrypt | 14 d | |
| 319 | cbslocal.com | A | 100 | — | — | TLS1.3 | Sectigo Public Server Authentication CA OV R36 | — | 43 d |
| 320 | cbsnews.com | A | 100 | — | — | TLS1.3 | Sectigo Public Server Authentication CA OV R36 | — | 92 d |
| 321 | cbssports.com | A | 100 | — | — | TLS1.3 | Sectigo Public Server Authentication CA OV R36 | — | 106 d |
| 322 | ccleaner.com | A | 100 | — | — | TLS1.3 | Amazon RSA 2048 M01 | — | 81 d |
| 323 | ccm.net | A | 100 | — | — | TLS1.3 | DigiCert Global G3 TLS ECC SHA384 2020 CA1 | — | 102 d |
| 324 | ccsenet.org | A | 100 | — | — | TLS1.3 | Let's Encrypt | — | 1 d |
| 325 | century21.com | A | 100 | — | — | TLS1.3 | Amazon RSA 2048 M04 | — | 36 d |
| 326 | cephalexinfds.com | A | 100 | — | — | TLS1.3 | Let's Encrypt | — | 30 d |
| 327 | chanel.com | A | 100 | — | — | TLS1.3 | DigiCert Global G3 TLS ECC SHA384 2020 CA1 | — | 0 d |
| 328 | charitynavigator.org | A | 100 | — | — | TLS1.3 | Let's Encrypt | — | 22 d |
| 329 | chefkoch.de | A | 100 | — | — | TLS1.3 | Let's Encrypt | — | 0 d |
| 330 | chello.nl | A | 100 | — | — | TLS1.3 | Let's Encrypt | — | 0 d |
| 331 | chevening.org | A | 100 | — | — | TLS1.3 | Let's Encrypt | — | 0 d |
| 332 | chicago.gov | A | 100 | — | — | TLS1.3 | Let's Encrypt | — | 6 d |
| 333 | childrenshospital.org | A | 100 | — | — | TLS1.3 | GlobalSign Atlas R46 DV TLS CA 2026 Q3 | — | 0 d |
| 334 | chip.de | A | 100 | — | — | TLS1.3 | DigiCert Global G3 TLS ECC SHA384 2020 CA1 | — | 7 d |
| 335 | choicehotels.com | A | 100 | — | — | TLS1.3 | DigiCert Global G3 TLS ECC SHA384 2020 CA1 | — | 0 d |
| 336 | choosechicago.com | A | 100 | — | — | TLS1.3 | Let's Encrypt | — | 0 d |
| 337 | chop.edu | A | 100 | — | — | TLS1.3 | Let's Encrypt | 9 d | |
| 338 | chowhound.com | A | 100 | — | — | TLS1.3 | Amazon RSA 2048 M04 | — | 86 d |
| 339 | christianbook.com | A | 100 | — | — | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | — | 105 d |
| 340 | christiantoday.com | A | 100 | — | — | TLS1.3 | Amazon RSA 2048 M01 | — | 132 d |
| 341 | chron.com | A | 100 | — | — | TLS1.3 | Let's Encrypt | 0 d | |
| 342 | cirquedusoleil.com | A | 100 | — | — | TLS1.3 | Go Daddy Secure Certificate Authority - G2 | — | 66 d |
| 343 | citylab.com | A | 100 | — | — | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | — | 87 d |
| 344 | citynews.ca | A | 100 | — | — | TLS1.3 | GeoTrust TLS RSA CA G1 | — | 128 d |
| 345 | citypages.com | A | 100 | — | — | TLS1.3 | Amazon RSA 2048 M04 | — | 113 d |
| 346 | citysearch.com | A | 100 | — | — | TLS1.3 | Amazon RSA 2048 M01 | — | 106 d |
| 347 | citytvplus.ca | A | 100 | — | — | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 37 d | |
| 348 | cityu.edu.hk | A | 100 | — | — | TLS1.3 | GlobalSign Atlas R46 DV TLS CA 2026 Q3 | — | 26 d |
| 349 | ck.jp.ap.valuecommerce.com | A | 100 | — | — | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | — | 0 d |
| 350 | cl.ly | A | 100 | — | — | TLS1.3 | Amazon RSA 2048 M01 | — | 104 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.