SSL Grade Leaderboard: Top 100 Websites
Scanned from 20,000 top global websites · Updated 2026-11-06
| # | Domain | Grade | Score | 30d trend | Δ | TLS | Issuer | HSTS | Expires |
|---|---|---|---|---|---|---|---|---|---|
| 2401 | openstax.org | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | — | 143 d |
| 2402 | opentable.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 73 d |
| 2403 | opera.com | A | 100 | TLS1.3 | Trust Provider B.V. TLS RSA CA G1 | — | 93 d | ||
| 2404 | operadeparis.fr | A | 100 | — | – | TLS1.3 | Gandi RSA Domain Validation Secure Server CA 4 | — | 167 d |
| 2405 | oppomobile.com | A | 100 | — | – | TLS1.3 | GeoTrust G2 TLS CN RSA4096 SHA256 2022 CA1 | — | 62 d |
| 2406 | oprah.com | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | — | 122 d |
| 2407 | optica.org | A | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 84 d | |
| 2408 | optout.aboutads.info | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 29 d |
| 2409 | or.cz | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 41 d |
| 2410 | ora.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 82 d |
| 2411 | orange-business.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 38 d |
| 2412 | orange.com | A | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | — | 42 d |
| 2413 | oregonlegislature.gov | A | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 93 d | |
| 2414 | oreillyauto.com | A | 100 | — | – | TLS1.3 | DigiCert Global G3 TLS ECC SHA384 2020 CA1 | — | 162 d |
| 2415 | oreillynet.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 41 d |
| 2416 | organicconsumers.org | A | 100 | — | – | TLS1.3 | Google Trust Services | — | 67 d |
| 2417 | origin.com | A | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | — | 143 d |
| 2418 | orkut.com | A | 100 | — | – | TLS1.3 | Google Trust Services | — | 50 d |
| 2419 | oschina.net | A | 100 | — | – | TLS1.3 | TrustAsia DV TLS RSA CA 2024 | — | 42 d |
| 2420 | osdn.jp | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 39 d |
| 2421 | osm.org | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 55 d |
| 2422 | otis.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 62 d |
| 2423 | ourcommons.ca | A | 100 | — | – | TLS1.3 | Thawte TLS RSA CA G1 | — | 127 d |
| 2424 | ours.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 39 d |
| 2425 | outkick.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 42 d |
| 2426 | outsystems.com | A | 100 | — | – | TLS1.3 | Amazon ECDSA 256 M04 | — | 53 d |
| 2427 | over-blog.fr | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 57 d |
| 2428 | overblog.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 81 d |
| 2429 | overclock.net | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 36 d |
| 2430 | ovh.net | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 36 d |
| 2431 | ow.ly | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | — | 192 d |
| 2432 | owncloud.org | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 80 d |
| 2433 | owst.jp | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | — | 163 d |
| 2434 | oxfam.org | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 79 d |
| 2435 | oxforddictionaries.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 61 d |
| 2436 | oxfordreference.com | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | — | 119 d |
| 2437 | pace.edu | A | 100 | — | – | TLS1.3 | InCommon Intermediate CA - OVG2C | — | 172 d |
| 2438 | pacific.edu | A | 100 | — | – | TLS1.3 | InCommon Intermediate CA - OVG2C | 190 d | |
| 2439 | pafcasino.net | A | 100 | — | — | TLS1.3 | Encryption Everywhere DV TLS CA - G2 | — | 28 d |
| 2440 | page.line.me | A | 100 | — | – | TLS1.3 | GlobalSign GCC R46 OV TLS CA 2025 | — | 115 d |
| 2441 | pagerduty.com | A | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | — | 133 d |
| 2442 | pagesperso-orange.fr | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 66 d |
| 2443 | paginegialle.it | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | — | 107 d |
| 2444 | paint.net | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 77 d |
| 2445 | paletton.com | A | 100 | — | — | TLS1.3 | Let's Encrypt | — | 0 d |
| 2446 | palgrave.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 77 d |
| 2447 | paltalk.com | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | — | 74 d |
| 2448 | pan.pl | A | 100 | — | – | TLS1.3 | Certum DV TLS G2 R39 CA | — | 143 d |
| 2449 | panasonic.eu | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 81 d |
| 2450 | panda.org | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 45 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.