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 |
|---|---|---|---|---|---|---|---|---|---|
| 4551 | distractify.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | 124 d | |
| 4552 | djangoproject.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 79 d | |
| 4553 | dji.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | 124 d | |
| 4554 | dkfz.de | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 28 d | |
| 4555 | dlrg.de | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | 91 d | |
| 4556 | dmi.dk | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 60 d | |
| 4557 | dmv.org | A+ | 100 | — | — | TLS1.3 | Amazon RSA 2048 M01 | 25 d | |
| 4558 | dna.fr | A+ | 100 | — | – | TLS1.3 | GlobalSign RSA OV SSL CA 2018 | 92 d | |
| 4559 | dnb.nl | A+ | 100 | — | – | TLS1.3 | DigiCert G2 TLS EU RSA4096 SHA384 2022 CA1 | 148 d | |
| 4560 | dns-shop.ru | A+ | 100 | — | – | TLS1.3 | GlobalSign RSA OV SSL CA 2018 | 76 d | |
| 4561 | dns.google | A+ | 100 | — | – | TLS1.3 | Google Trust Services | 54 d | |
| 4562 | dnspod.cn | A+ | 100 | — | – | TLS1.3 | DigiCert Secure Site OV G2 TLS CN RSA4096 SHA256 2022 CA1 | 59 d | |
| 4563 | dnsstuff.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 82 d | |
| 4564 | dobro.ru | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 87 d | |
| 4565 | docker.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 51 d | |
| 4566 | docs.rs | A+ | 100 | — | – | TLS1.3 | GlobalSign Atlas R3 DV TLS CA 2025 Q4 | 51 d | |
| 4567 | doctoroz.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 79 d | |
| 4568 | doctorswithoutborders.org | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 55 d | |
| 4569 | documentfoundation.org | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 57 d | |
| 4570 | docusign.com | A+ | 100 | — | – | TLS1.3 | DigiCert EV RSA CA G2 | 79 d | |
| 4571 | doi.org | A+ | 100 | TLS1.3 | Google Trust Services | 37 d | |||
| 4572 | dol.gov | A+ | 100 | — | – | TLS1.3 | GeoTrust TLS RSA CA G1 | 142 d | |
| 4573 | dolcegabbana.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 86 d | |
| 4574 | dollargeneral.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 75 d | |
| 4575 | domain.com.au | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | 63 d | |
| 4576 | domainmarkt.de | A+ | 100 | — | – | TLS1.3 | GlobalSign GCC R6 AlphaSSL CA 2025 | 127 d | |
| 4577 | domestika.org | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | 48 d | |
| 4578 | domo.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 S19 | 192 d | |
| 4579 | dongbaqu.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 31 d | |
| 4580 | donotcall.gov | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | 123 d | |
| 4581 | dortmund.de | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 59 d | |
| 4582 | dosbox.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 71 d | |
| 4583 | dosomething.org | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | 146 d | |
| 4584 | doterra.com | A+ | 100 | — | – | TLS1.3 | Go Daddy Secure Certificate Authority - G2 | 147 d | |
| 4585 | douyin.com | A+ | 100 | — | – | TLS1.3 | RapidSSL TLS RSA CA G1 | 71 d | |
| 4586 | dow.com | A+ | 100 | — | – | TLS1.3 | DigiCert Global G3 TLS ECC SHA384 2020 CA1 | 133 d | |
| 4587 | dp.la | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | 158 d | |
| 4588 | dpd.com | A+ | 100 | — | – | TLS1.3 | Thawte TLS RSA CA G1 | 128 d | |
| 4589 | dreamhost.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | 118 d | |
| 4590 | dreamstime.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 60 d | |
| 4591 | dribbble.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | 157 d | |
| 4592 | drinkaware.co.uk | A+ | 100 | — | – | TLS1.3 | GeoTrust TLS RSA CA G1 | 148 d | |
| 4593 | drsongzi.com | A+ | 100 | — | – | TLS1.3 | Xcc Trust DV SSL CA | 109 d | |
| 4594 | drugs.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 60 d | |
| 4595 | dsgvo-gesetz.de | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 52 d | |
| 4596 | dsm-firmenich.com | A+ | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 167 d | |
| 4597 | dsv.com | A+ | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 182 d | |
| 4598 | ducati.com | A+ | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 154 d | |
| 4599 | duckduckgo.com | A+ | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 194 d | |
| 4600 | duesseldorf.de | A+ | 100 | — | – | TLS1.3 | Telekom Security ServerID OV Class 2 CA | 107 d |
Track grade changes for your domains
Sign up free, watch your domains and get alerted the moment a grade drops.
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.