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 |
|---|---|---|---|---|---|---|---|---|---|
| 6001 | rcsb.org | A+ | 100 | — | – | TLS1.3 | InCommon RSA OV SSL CA 3 | 85 d | |
| 6002 | react.dev | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 69 d | |
| 6003 | reactos.org | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 84 d | |
| 6004 | ready.gov | A+ | 100 | — | – | TLS1.3 | DigiCert Global G3 TLS ECC SHA384 2020 CA1 | 94 d | |
| 6005 | realself.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | 153 d | |
| 6006 | rechtspraak.nl | A+ | 100 | — | – | TLS1.3 | DigiCert G2 TLS EU RSA4096 SHA384 2022 CA1 | 159 d | |
| 6007 | recipetineats.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | 173 d | |
| 6008 | recordstoreday.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | 123 d | |
| 6009 | recreation.gov | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | 108 d | |
| 6010 | red-dot.org | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 56 d | |
| 6011 | red-gate.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 80 d | |
| 6012 | redcross.org.uk | A+ | 100 | — | – | TLS1.3 | GlobalSign Atlas R46 DV TLS CA 2026 Q4 | 87 d | |
| 6013 | reddit.com | A+ | 100 | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 102 d | |||
| 6014 | redhat.com | A+ | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 120 d | |
| 6015 | redirectingat.com | A+ | 100 | — | – | TLS1.3 | Google Trust Services | 51 d | |
| 6016 | reed.edu | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 43 d | |
| 6017 | reedsy.com | A+ | 100 | — | – | TLS1.3 | Google Trust Services | 62 d | |
| 6018 | refinery29.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 67 d | |
| 6019 | registerguard.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 77 d | |
| 6020 | regular-expressions.info | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 82 d | |
| 6021 | regulations.gov | A+ | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 55 d | |
| 6022 | reichelt.de | A+ | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 34 d | |
| 6023 | reliefweb.int | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | 186 d | |
| 6024 | remitly.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | 110 d | |
| 6025 | renesas.com | A+ | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 63 d | |
| 6026 | rentalcars.com | A+ | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 55 d | |
| 6027 | repairmywindowsanddoors.co.uk | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 69 d | |
| 6028 | republicworld.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | 174 d | |
| 6029 | rescue.org | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 76 d | |
| 6030 | research.google | A+ | 100 | — | – | TLS1.3 | Google Trust Services | 54 d | |
| 6031 | research.net | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | 158 d | |
| 6032 | researchandmarkets.com | A+ | 100 | — | – | TLS1.3 | GeoTrust TLS RSA CA G1 | 136 d | |
| 6033 | researchgate.net | A+ | 100 | TLS1.3 | Google Trust Services | 67 d | |||
| 6034 | resend.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 84 d | |
| 6035 | reservio.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 58 d | |
| 6036 | restofworld.org | A+ | 100 | — | – | TLS1.3 | Google Trust Services | 84 d | |
| 6037 | resy.com | A+ | 100 | — | – | TLS1.3 | DigiCert EV RSA CA G2 | 161 d | |
| 6038 | retool.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 86 d | |
| 6039 | rev.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | 143 d | |
| 6040 | revealnews.org | A+ | 100 | — | – | TLS1.3 | Google Trust Services | 60 d | |
| 6041 | revenuecat.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 35 d | |
| 6042 | reverbnation.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | 97 d | |
| 6043 | rferl.org | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 68 d | |
| 6044 | rfi.fr | A+ | 100 | — | – | TLS1.3 | DigiCert Global G3 TLS ECC SHA384 2020 CA1 | 43 d | |
| 6045 | rgj.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 77 d | |
| 6046 | rgo.ru | A+ | 100 | — | – | TLS1.3 | GlobalSign GCC R6 AlphaSSL CA 2025 | 28 d | |
| 6047 | rh.com | A+ | 100 | — | – | TLS1.3 | DigiCert EV RSA CA G2 | 78 d | |
| 6048 | rheumatology.org | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 70 d | |
| 6049 | rhino3d.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | 136 d | |
| 6050 | ria.ru | A+ | 100 | — | – | TLS1.3 | LiteSSL ECC CA 2025 | 39 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.