SSL Grade Leaderboard: Top 100 Websites
Scanned from 20,000 top global websites · Updated 2026-11-08
| # | Domain | Grade | Score | 30d trend | Δ | TLS | Issuer | HSTS | Expires |
|---|---|---|---|---|---|---|---|---|---|
| 10301 | zdfheute.de | A | 95 | — | – | TLS1.2 | Let's Encrypt | — | 78 d |
| 10302 | zebra.com | A | 95 | — | – | TLS1.2 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 148 d | |
| 10303 | zen.co.uk | A | 95 | — | – | TLS1.2 | Amazon RSA 2048 M01 | 129 d | |
| 10304 | zeroweb.kr | A | 95 | — | — | TLS1.2 | Sectigo RSA Domain Validation Secure Server CA | — | 20 d |
| 10305 | zhandian.cn | A | 95 | — | – | TLS1.2 | Encryption Everywhere DV TLS CA - G2 | — | 133 d |
| 10306 | zhibo8.com | A | 95 | — | – | TLS1.2 | Encryption Everywhere DV TLS CA - G2 | — | 150 d |
| 10307 | zhidao.baidu.com | A | 95 | — | – | TLS1.2 | GlobalSign RSA OV SSL CA 2018 | — | 77 d |
| 10308 | zhihu.com | A | 95 | — | – | TLS1.2 | GeoTrust G2 TLS CN RSA4096 SHA256 2022 CA1 | — | 33 d |
| 10309 | zhsumarc.com | A | 95 | — | – | TLS1.2 | GeoTrust TLS RSA CA G1 | — | 48 d |
| 10310 | ziggo.nl | A | 95 | — | – | TLS1.2 | DigiCert G2 TLS EU RSA4096 SHA384 2022 CA1 | 102 d | |
| 10311 | zing.vn | A | 95 | — | – | TLS1.2 | DigiCert Global G3 TLS ECC SHA384 2020 CA1 | — | 81 d |
| 10312 | zngfj.cn | A | 95 | — | – | TLS1.2 | RapidSSL TLS RSA CA G1 | 103 d | |
| 10313 | zol.com.cn | A | 95 | — | – | TLS1.2 | GeoTrust G2 TLS CN RSA4096 SHA256 2022 CA1 | — | 91 d |
| 10314 | zomato.com | A | 95 | — | – | TLS1.2 | Amazon RSA 2048 M04 | 109 d | |
| 10315 | zoopla.co.uk | A | 95 | — | – | TLS1.2 | Amazon RSA 2048 M01 | — | 172 d |
| 10316 | zumper.com | A | 95 | — | – | TLS1.2 | Amazon RSA 2048 M01 | 114 d | |
| 10317 | zw.cn | A | 95 | — | – | TLS1.2 | Sectigo Public Server Authentication CA OV R36 | — | 119 d |
| 10318 | zwbsg.com | A | 95 | — | – | TLS1.2 | Encryption Everywhere DV TLS CA - G2 | — | 176 d |
| 10319 | zx3315.cn | A | 95 | — | – | TLS1.2 | RapidSSL TLS RSA CA G1 | — | 104 d |
| 10320 | nmap.org | A+ | 95 | — | – | TLS1.3 | Let's Encrypt | 39 d | |
| 10321 | 115.com | A | 93 | — | – | TLS1.2 | GeoTrust G2 TLS CN RSA4096 SHA256 2022 CA1 | — | 151 d |
| 10322 | 123pan.com | A | 93 | — | – | TLS1.2 | cnTrus RSA DV SSL CA 2 | — | 81 d |
| 10323 | 1and1.com | A | 93 | — | – | TLS1.2 | Sectigo Public Server Authentication CA OV R36 | — | 153 d |
| 10324 | 1gb.ua | A | 93 | — | – | TLS1.2 | Sectigo Public Server Authentication CA DV R36 | — | 132 d |
| 10325 | 22net.com | A | 93 | — | – | TLS1.2 | Sectigo Public Server Authentication CA DV R36 | — | 140 d |
| 10326 | 3com.com | A | 93 | — | – | TLS1.2 | GoDaddy TLS Intermediate CA DV - R1v1 | — | 38 d |
| 10327 | 4399.com | A | 93 | — | – | TLS1.2 | TrustAsia DV TLS RSA CA 2024 | — | 116 d |
| 10328 | 4shared.com | A | 93 | — | – | TLS1.2 | GoDaddy TLS Intermediate CA DV - R1v1 | — | 52 d |
| 10329 | 50webs.com | A | 93 | — | – | TLS1.2 | Sectigo Public Server Authentication CA DV R36 | — | 65 d |
| 10330 | 8yx.com | A | 93 | — | – | TLS1.2 | WoTrus RSA DV SSL CA 2 | — | 116 d |
| 10331 | abdn.ac.uk | A | 93 | — | – | TLS1.2 | Sectigo Public Server Authentication CA OV R36 | 154 d | |
| 10332 | academy.com | A | 93 | — | – | TLS1.2 | Sectigo Public Server Authentication CA OV R36 | — | 87 d |
| 10333 | acehardware.com | A | 93 | — | – | TLS1.2 | Let's Encrypt | 76 d | |
| 10334 | adb.org | A | 93 | — | – | TLS1.2 | GoDaddy TLS Intermediate CA DV - R1v1 | 181 d | |
| 10335 | adidas.com | A | 93 | — | – | TLS1.2 | Sectigo Public Server Authentication CA EV R36 | — | 175 d |
| 10336 | adidas.com.hk | A | 93 | — | – | TLS1.2 | Sectigo Public Server Authentication CA EV R36 | — | 175 d |
| 10337 | adminer.org | A | 93 | — | – | TLS1.2 | Let's Encrypt | 82 d | |
| 10338 | adoptapet.com | A | 93 | — | – | TLS1.2 | Sectigo Public Server Authentication CA DV R36 | — | 173 d |
| 10339 | aerzteblatt.de | A | 93 | — | – | TLS1.2 | Sectigo Public Server Authentication CA DV R36 | 153 d | |
| 10340 | ai-db.science | A | 93 | — | – | TLS1.2 | Let's Encrypt | — | 31 d |
| 10341 | allstate.com | A | 93 | — | – | TLS1.2 | Sectigo Public Server Authentication CA OV R40 | — | 132 d |
| 10342 | ally.com | A | 93 | — | – | TLS1.2 | Sectigo Public Server Authentication CA OV R36 | — | 32 d |
| 10343 | altibox.no | A | 93 | — | – | TLS1.2 | GoDaddy TLS Intermediate CA DV - R1v1 | 189 d | |
| 10344 | amap.com | A | 93 | — | – | TLS1.2 | GlobalSign GCC R3 OV TLS CA 2024 | 100 d | |
| 10345 | amgen.com | A | 93 | — | – | TLS1.2 | Sectigo Public Server Authentication CA OV R36 | — | 67 d |
| 10346 | aqicn.org | A | 93 | — | – | TLS1.2 | Let's Encrypt | 78 d | |
| 10347 | arrl.org | A | 93 | — | – | TLS1.2 | Go Daddy Secure Certificate Authority - G2 | — | 51 d |
| 10348 | arts.ac.uk | A | 93 | — | – | TLS1.2 | Sectigo Public Server Authentication CA OV R36 | — | 180 d |
| 10349 | astrazeneca.com | A | 93 | — | – | TLS1.2 | Sectigo Public Server Authentication CA OV R36 | — | 193 d |
| 10350 | auburn.edu | A | 93 | — | – | TLS1.2 | InCommon Intermediate CA - DVG2C | — | 183 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.