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 |
|---|---|---|---|---|---|---|---|---|---|
| 6351 | substack.com | A+ | 100 | TLS1.3 | Google Trust Services | 42 d | |||
| 6352 | success.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 77 d | |
| 6353 | sucuri.net | A+ | 100 | — | – | TLS1.3 | GoDaddy TLS Intermediate CA DV - R1v1 | 145 d | |
| 6354 | suedkurier.de | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | 166 d | |
| 6355 | summitracing.com | A+ | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 91 d | |
| 6356 | sumup.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 84 d | |
| 6357 | sunderland.ac.uk | A+ | 100 | — | – | TLS1.3 | SSL.com TLS Issuing RSA CA R1 | 195 d | |
| 6358 | supabase.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 33 d | |
| 6359 | support.apple.com | A+ | 100 | TLS1.3 | Apple Public EV Server RSA CA 1 - G1 | 68 d | |||
| 6360 | supremecourt.gov | A+ | 100 | — | – | TLS1.3 | DigiCert Global G3 TLS ECC SHA384 2020 CA1 | 96 d | |
| 6361 | supremecourt.uk | A+ | 100 | — | – | TLS1.3 | GeoTrust TLS RSA CA G1 | 111 d | |
| 6362 | surveymonkey.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | 158 d | |
| 6363 | survio.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 54 d | |
| 6364 | sutterhealth.org | A+ | 100 | — | – | TLS1.3 | Sectigo Public Server Authentication CA OV R36 | 160 d | |
| 6365 | svelte.dev | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 72 d | |
| 6366 | svoboda.org | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 51 d | |
| 6367 | swapcard.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 49 d | |
| 6368 | swarovski.com | A+ | 100 | — | – | TLS1.3 | DigiCert Global G3 TLS ECC SHA384 2020 CA1 | 153 d | |
| 6369 | swift.org | A+ | 100 | — | – | TLS1.3 | Apple Public Server ECC CA 1 - G1 | 41 d | |
| 6370 | swisscom.ch | A+ | 100 | — | – | TLS1.3 | SwissSign RSA TLS OV ICA 2022 - 1 | 60 d | |
| 6371 | swisstransfer.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 64 d | |
| 6372 | sydneyoperahouse.com | A+ | 100 | — | – | TLS1.3 | Go Daddy Secure Certificate Authority - G2 | 43 d | |
| 6373 | sydsvenskan.se | A+ | 100 | — | – | TLS1.3 | Google Trust Services | 56 d | |
| 6374 | syfy.com | A+ | 100 | — | – | TLS1.3 | DigiCert Global G3 TLS ECC SHA384 2020 CA1 | 33 d | |
| 6375 | sympla.com.br | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | 124 d | |
| 6376 | synchrony.com | A+ | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 87 d | |
| 6377 | syngenta.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 61 d | |
| 6378 | synthesia.io | A+ | 100 | — | – | TLS1.3 | Google Trust Services | 36 d | |
| 6379 | syracuse.edu | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | 70 d | |
| 6380 | sysaid.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 51 d | |
| 6381 | t-mobile.com | A+ | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 103 d | |
| 6382 | t3.com | A+ | 100 | — | – | TLS1.3 | GlobalSign Atlas R46 DV TLS CA 2026 Q3 | 62 d | |
| 6383 | taboola.com | A+ | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 60 d | |
| 6384 | tagesschau.de | A+ | 100 | — | – | TLS1.3 | Google Trust Services | 57 d | |
| 6385 | tails.net | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 49 d | |
| 6386 | tailscale.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 37 d | |
| 6387 | talentlms.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | 126 d | |
| 6388 | tallahassee.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 76 d | |
| 6389 | tampabay28.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | 116 d | |
| 6390 | taobao.com | A+ | 100 | — | – | TLS1.3 | GlobalSign GCC R46 OV TLS CA 2025 | 188 d | |
| 6391 | taptap.cn | A+ | 100 | — | – | TLS1.3 | RapidSSL TLS RSA CA G1 | 194 d | |
| 6392 | target.com | A+ | 100 | — | – | TLS1.3 | GlobalSign Atlas R46 OV TLS CA 2026 Q3 | 125 d | |
| 6393 | tasty.co | A+ | 100 | — | – | TLS1.3 | GlobalSign Atlas R46 DV TLS CA 2026 Q3 | 135 d | |
| 6394 | tate.org.uk | A+ | 100 | — | – | TLS1.3 | Sectigo Public Server Authentication CA DV R36 | 90 d | |
| 6395 | taxfoundation.org | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | 70 d | |
| 6396 | taylorswift.com | A+ | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 158 d | |
| 6397 | taz.de | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 42 d | |
| 6398 | tcd.ie | A+ | 100 | — | – | TLS1.3 | GEANT TLS RSA 1 | 92 d | |
| 6399 | tci-thaijo.org | A+ | 100 | — | – | TLS1.3 | ZeroSSL ECC DV SSL CA 2 | 78 d | |
| 6400 | tcm.com | A+ | 100 | — | – | TLS1.3 | GlobalSign RSA OV SSL CA 2018 | 64 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.