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 |
|---|---|---|---|---|---|---|---|---|---|
| 2351 | office.com | A | 100 | TLS1.3 | Microsoft TLS G2 RSA CA OCSP 04 | — | 77 d | ||
| 2352 | office365.com | A | 100 | — | – | TLS1.3 | Microsoft TLS G2 RSA CA OCSP 02 | — | 77 d |
| 2353 | officedepot.com | A | 100 | — | – | TLS1.3 | GeoTrust TLS RSA CA G1 | — | 72 d |
| 2354 | ogp.me | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 78 d |
| 2355 | ohchr.org | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | — | 128 d |
| 2356 | ohio.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 45 d |
| 2357 | ohio.gov | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | — | 123 d |
| 2358 | ohiodnr.gov | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | — | 171 d |
| 2359 | ohiolink.edu | A | 100 | — | – | TLS1.3 | Let's Encrypt | 53 d | |
| 2360 | ohsu.edu | A | 100 | — | – | TLS1.3 | InCommon Intermediate CA - OVG2C | 115 d | |
| 2361 | okfn.de | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 77 d |
| 2362 | okfn.org | A | 100 | — | – | TLS1.3 | Google Trust Services | 40 d | |
| 2363 | olark.com | A | 100 | — | – | TLS1.3 | Google Trust Services | — | 69 d |
| 2364 | olemiss.edu | A | 100 | — | – | TLS1.3 | InCommon RSA Server CA 2 | — | 51 d |
| 2365 | ollama.com | A | 100 | — | – | TLS1.3 | Google Trust Services | — | 40 d |
| 2366 | olybets.net | A | 100 | — | — | TLS1.3 | Encryption Everywhere DV TLS CA - G2 | — | 28 d |
| 2367 | olympic.org | A | 100 | — | – | TLS1.3 | GeoTrust TLS RSA CA G1 | — | 65 d |
| 2368 | olympics.com | A | 100 | — | – | TLS1.3 | DigiCert Global G3 TLS ECC SHA384 2020 CA1 | — | 128 d |
| 2369 | omaha.com | A | 100 | — | – | TLS1.3 | Google Trust Services | — | 84 d |
| 2370 | omegawatches.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 61 d |
| 2371 | ondemand.com | A | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | — | 132 d |
| 2372 | oneandonlyresorts.com | A | 100 | — | – | TLS1.3 | DigiCert Global G3 TLS ECC SHA384 2020 CA1 | — | 186 d |
| 2373 | onedio.com | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | — | 65 d |
| 2374 | onelink.me | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | — | 90 d |
| 2375 | onelogin.com | A | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 128 d | |
| 2376 | onelook.com | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | — | 174 d |
| 2377 | onenote.com | A | 100 | — | – | TLS1.3 | Microsoft TLS G2 ECC CA OCSP 02 | — | 88 d |
| 2378 | onet.pl | A | 100 | — | – | TLS1.3 | GeoTrust TLS RSA CA G1 | — | 150 d |
| 2379 | onisep.fr | A | 100 | — | – | TLS1.3 | GEANT TLS RSA 1 | — | 36 d |
| 2380 | onlamp.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 57 d |
| 2381 | online.fliphtml5.com | A | 100 | — | – | TLS1.3 | Go Daddy Secure Certificate Authority - G2 | — | 142 d |
| 2382 | online.no | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 68 d |
| 2383 | onlinevetjobs.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 58 d |
| 2384 | onrender.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 76 d |
| 2385 | open-std.org | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 65 d |
| 2386 | openbsd.org | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 78 d |
| 2387 | openedition.org | A | 100 | — | – | TLS1.3 | Let's Encrypt | 63 d | |
| 2388 | openfoodfacts.org | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 74 d |
| 2389 | openjdk.org | A | 100 | — | – | TLS1.3 | DigiCert Global G3 TLS ECC SHA384 2020 CA1 | — | 107 d |
| 2390 | openldap.org | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 34 d |
| 2391 | openlibrary.org | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 82 d |
| 2392 | openpr.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 81 d |
| 2393 | openpr.de | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 84 d |
| 2394 | openrec.tv | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | — | 48 d |
| 2395 | openrepository.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 88 d |
| 2396 | openscad.org | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 81 d |
| 2397 | openshift.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 72 d |
| 2398 | openshot.org | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | 35 d | |
| 2399 | openssh.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 78 d |
| 2400 | openssh.org | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 78 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.