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 |
|---|---|---|---|---|---|---|---|---|---|
| 4501 | depaul.edu | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 48 d | |
| 4502 | deque.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 54 d | |
| 4503 | dermstore.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 45 d | |
| 4504 | descript.com | A+ | 100 | — | – | TLS1.3 | Google Trust Services | 54 d | |
| 4505 | desertsun.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 82 d | |
| 4506 | desjardins.com | A+ | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 146 d | |
| 4507 | desmoinesregister.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 54 d | |
| 4508 | desy.de | A+ | 100 | — | – | TLS1.3 | GEANT TLS RSA 1 | 190 d | |
| 4509 | detik.com | A+ | 100 | — | – | TLS1.3 | Thawte TLS RSA CA G1 | 46 d | |
| 4510 | detroitnews.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 54 d | |
| 4511 | deusto.es | A+ | 100 | — | – | TLS1.3 | ZeroSSL ECC DV SSL CA 2 | 66 d | |
| 4512 | deutsche-boerse.com | A+ | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 69 d | |
| 4513 | deutsche-digitale-bibliothek.de | A+ | 100 | — | – | TLS1.3 | GEANT TLS RSA 1 | 91 d | |
| 4514 | deutschepost.de | A+ | 100 | — | – | TLS1.3 | DPDHL Global TLS CA - I5 | 50 d | |
| 4515 | deutschland.de | A+ | 100 | — | – | TLS1.3 | RapidSSL TLS RSA CA G1 | 177 d | |
| 4516 | deutschlandfunk.de | A+ | 100 | — | – | TLS1.3 | Google Trust Services | 61 d | |
| 4517 | deutschlandfunkkultur.de | A+ | 100 | — | – | TLS1.3 | Google Trust Services | 65 d | |
| 4518 | deutschlandradio.de | A+ | 100 | — | – | TLS1.3 | Google Trust Services | 60 d | |
| 4519 | devin.ai | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 35 d | |
| 4520 | dewalt.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 41 d | |
| 4521 | dfb.de | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 39 d | |
| 4522 | dfds.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | 72 d | |
| 4523 | dg-datenschutz.de | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 81 d | |
| 4524 | dgb.de | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 55 d | |
| 4525 | dgt.es | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 33 d | |
| 4526 | dhl.de | A+ | 100 | — | – | TLS1.3 | DPDHL Global TLS CA - I5 | 78 d | |
| 4527 | dhs.gov | A+ | 100 | — | – | TLS1.3 | GeoTrust TLS RSA CA G1 | 188 d | |
| 4528 | di.se | A+ | 100 | — | – | TLS1.3 | Google Trust Services | 55 d | |
| 4529 | diabetes.org.uk | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 41 d | |
| 4530 | diamond.jp | A+ | 100 | — | – | TLS1.3 | GlobalSign GCC R3 DV TLS CA 2020 | 106 d | |
| 4531 | diariodarepublica.pt | A+ | 100 | — | – | TLS1.3 | Thawte TLS RSA CA G1 | 152 d | |
| 4532 | diba.cat | A+ | 100 | — | – | TLS1.3 | GeoTrust TLS RSA CA G1 | 42 d | |
| 4533 | dice.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | 183 d | |
| 4534 | diepresse.com | A+ | 100 | — | – | TLS1.3 | Go Daddy Secure Certificate Authority - G2 | 42 d | |
| 4535 | digg.com | A+ | 100 | — | – | TLS1.3 | Google Trust Services | 67 d | |
| 4536 | digi24.ro | A+ | 100 | — | – | TLS1.3 | Go Daddy Secure Certificate Authority - G2 | 44 d | |
| 4537 | digital.gov | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 55 d | |
| 4538 | digitalcameraworld.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 77 d | |
| 4539 | digitale-sammlungen.de | A+ | 100 | — | – | TLS1.3 | GEANT TLS ECC 1 | 177 d | |
| 4540 | digitalmarketinginstitute.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | 184 d | |
| 4541 | digitalspy.com | A+ | 100 | — | – | TLS1.3 | GlobalSign Atlas R3 DV TLS CA 2025 Q4 | 89 d | |
| 4542 | dihk.de | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 70 d | |
| 4543 | disasterassistance.gov | A+ | 100 | — | – | TLS1.3 | DigiCert Global G3 TLS ECC SHA384 2020 CA1 | 94 d | |
| 4544 | discord.com | A+ | 100 | TLS1.3 | Google Trust Services | 80 d | |||
| 4545 | discourse.org | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | 153 d | |
| 4546 | discoverasr.com | A+ | 100 | — | – | TLS1.3 | GeoTrust TLS RSA CA G1 | 148 d | |
| 4547 | discoverwildlife.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 62 d | |
| 4548 | discoveryplus.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | 116 d | |
| 4549 | dish.com | A+ | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 160 d | |
| 4550 | dispatch.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 82 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.