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 |
|---|---|---|---|---|---|---|---|---|---|
| 7001 | ycharts.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | 77 d | |
| 7002 | ycombinator.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | 181 d | |
| 7003 | yelp.ca | A+ | 100 | — | – | TLS1.3 | GlobalSign Atlas R46 DV TLS CA 2026 Q4 | 190 d | |
| 7004 | yidianzixun.com | A+ | 100 | — | – | TLS1.3 | GeoTrust G2 TLS CN RSA4096 SHA256 2022 CA1 | 48 d | |
| 7005 | yimg.com | A+ | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 61 d | |
| 7006 | yle.fi | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 S19 | 194 d | |
| 7007 | yogajournal.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 33 d | |
| 7008 | yoox.com | A+ | 100 | — | – | TLS1.3 | DigiCert Global G3 TLS ECC SHA384 2020 CA1 | 139 d | |
| 7009 | yougov.com | A+ | 100 | — | – | TLS1.3 | GlobalSign Atlas R46 DV TLS CA 2026 Q4 | 73 d | |
| 7010 | youngliving.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | 81 d | |
| 7011 | youradchoices.ca | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 37 d | |
| 7012 | yourhosting.nl | A+ | 100 | — | – | TLS1.3 | PerfectSSL | 165 d | |
| 7013 | youronlinechoices.com | A+ | 100 | — | – | TLS1.3 | GoDaddy TLS Intermediate CA DV - R1v1 | 86 d | |
| 7014 | youronlinechoices.eu | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 64 d | |
| 7015 | yourtango.com | A+ | 100 | — | – | TLS1.3 | Sectigo Public Server Authentication CA OV R36 | 194 d | |
| 7016 | youtube.com | A+ | 100 | TLS1.3 | Google Trust Services | 54 d | |||
| 7017 | ysl.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 38 d | |
| 7018 | yubico.com | A+ | 100 | — | – | TLS1.3 | GlobalSign Atlas R46 DV TLS CA 2026 Q3 | 168 d | |
| 7019 | yumpu.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 S21 | 189 d | |
| 7020 | yupeiholdings.com | A+ | 100 | — | – | TLS1.3 | JoySSL OV TLS G2 R33 CA | 100 d | |
| 7021 | zacks.com | A+ | 100 | — | – | TLS1.3 | GlobalSign Atlas R46 DV TLS CA 2026 Q4 | 70 d | |
| 7022 | zaobao.com.sg | A+ | 100 | — | – | TLS1.3 | Amazon ECDSA 256 M04 | 132 d | |
| 7023 | zapier.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | 111 d | |
| 7024 | zaq.ne.jp | A+ | 100 | — | – | TLS1.3 | GlobalSign GCC R46 OV TLS CA 2025 | 148 d | |
| 7025 | zara.com | A+ | 100 | — | – | TLS1.3 | DigiCert Global G3 TLS ECC SHA384 2020 CA1 | 140 d | |
| 7026 | zarahome.com | A+ | 100 | — | – | TLS1.3 | DigiCert Global G3 TLS ECC SHA384 2020 CA1 | 102 d | |
| 7027 | zawya.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | 185 d | |
| 7028 | zcool.com.cn | A+ | 100 | — | – | TLS1.3 | GeoTrust G2 TLS CN RSA4096 SHA256 2022 CA1 | 35 d | |
| 7029 | zcu.cz | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 41 d | |
| 7030 | zeemaps.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | 144 d | |
| 7031 | zemanta.com | A+ | 100 | — | – | TLS1.3 | DigiCert Global G3 TLS ECC SHA384 2020 CA1 | 159 d | |
| 7032 | zenbusiness.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 41 d | |
| 7033 | zend.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 50 d | |
| 7034 | zenfolio.com | A+ | 100 | — | – | TLS1.3 | Google Trust Services | 46 d | |
| 7035 | zeno.fm | A+ | 100 | — | – | TLS1.3 | Sectigo Public Server Authentication CA DV R36 | 147 d | |
| 7036 | zf.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | 128 d | |
| 7037 | zhaw.ch | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 63 d | |
| 7038 | zillow.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | 55 d | |
| 7039 | zinio.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | 106 d | |
| 7040 | zipcar.com | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | 87 d | |
| 7041 | zjol.com.cn | A+ | 100 | — | – | TLS1.3 | GeoTrust G2 TLS CN RSA4096 SHA256 2022 CA1 | 139 d | |
| 7042 | znanierussia.ru | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 36 d | |
| 7043 | zocdoc.com | A+ | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 166 d | |
| 7044 | zoho.com | A+ | 100 | — | – | TLS1.3 | Sectigo Public Server Authentication CA DV R36 | 161 d | |
| 7045 | zohopublic.com | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 61 d | |
| 7046 | zone.ee | A+ | 100 | — | – | TLS1.3 | Let's Encrypt | 65 d | |
| 7047 | zonealarm.com | A+ | 100 | — | – | TLS1.3 | Sectigo Public Server Authentication CA OV R36 | 62 d | |
| 7048 | zongheng.com | A+ | 100 | — | – | TLS1.3 | RapidSSL TLS RSA CA G1 | 188 d | |
| 7049 | zotero.org | A+ | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | 147 d | |
| 7050 | zscaler.com | A+ | 100 | — | – | TLS1.3 | DigiCert EV RSA CA G2 | 110 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.