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 |
|---|---|---|---|---|---|---|---|---|---|
| 10051 | tudou.com | A | 95 | — | – | TLS1.2 | GlobalSign GCC R3 OV TLS CA 2024 | 104 d | |
| 10052 | tuik.gov.tr | A | 95 | — | – | TLS1.2 | GeoTrust TLS RSA CA G1 | — | 134 d |
| 10053 | tuni.fi | A | 95 | — | – | TLS1.2 | GEANT TLS ECC 1 | 159 d | |
| 10054 | tuniu.com | A | 95 | — | – | TLS1.2 | ZeroSSL ECC DV SSL CA 2 | — | 54 d |
| 10055 | turbopages.org | A | 95 | — | — | TLS1.2 | GlobalSign RSA OV SSL CA 2018 | — | 12 d |
| 10056 | tuyuphoto.com | A | 95 | — | — | TLS1.2 | Let's Encrypt | — | 15 d |
| 10057 | tv-asahi.co.jp | A | 95 | — | – | TLS1.2 | Cybertrust Japan SureServer CA G4 | — | 42 d |
| 10058 | twilio.com | A | 95 | — | – | TLS1.2 | Amazon RSA 2048 M01 | 80 d | |
| 10059 | twitcasting.tv | A | 95 | — | – | TLS1.2 | RapidSSL TLS RSA CA G1 | — | 61 d |
| 10060 | twitch.com | A | 95 | — | – | TLS1.2 | Amazon RSA 2048 M04 | — | 79 d |
| 10061 | txstate.edu | A | 95 | — | – | TLS1.2 | InCommon RSA OV SSL CA 3 | — | 69 d |
| 10062 | u-bordeaux.fr | A | 95 | — | — | TLS1.2 | GEANT TLS RSA 1 | 0 d | |
| 10063 | u-szeged.hu | A | 95 | — | – | TLS1.2 | GEANT TLS RSA 1 | — | 27 d |
| 10064 | u.ae | A | 95 | — | – | TLS1.2 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 126 d | |
| 10065 | uaf.edu | A | 95 | — | – | TLS1.2 | InCommon Intermediate CA - OVG2C | — | 152 d |
| 10066 | uam.es | A | 95 | — | — | TLS1.2 | GEANT TLS RSA 1 | — | 39 d |
| 10067 | ubalt.edu | A | 95 | — | – | TLS1.2 | Thawte TLS RSA CA G1 | — | 95 d |
| 10068 | ubbcluj.ro | A | 95 | — | — | TLS1.2 | Let's Encrypt | — | 0 d |
| 10069 | uc.cl | A | 95 | — | – | TLS1.2 | Sectigo Public Server Authentication CA DV R36 | — | 143 d |
| 10070 | uc.cn | A | 95 | — | – | TLS1.2 | GlobalSign GCC R3 OV TLS CA 2024 | 90 d | |
| 10071 | uca.es | A | 95 | — | – | TLS1.2 | GEANT TLS RSA 1 | — | 187 d |
| 10072 | uci.edu | A | 95 | — | – | TLS1.2 | Amazon RSA 2048 M01 | — | 66 d |
| 10073 | ucla.edu | A | 95 | — | – | TLS1.2 | Amazon RSA 2048 M04 | — | 86 d |
| 10074 | ucoz.ru | A | 95 | — | – | TLS1.2 | GlobalSign GCC R46 AlphaSSL CA 2025 | — | 151 d |
| 10075 | udayton.edu | A | 95 | — | – | TLS1.2 | InCommon RSA Server CA 2 | 59 d | |
| 10076 | udc.es | A | 95 | — | – | TLS1.2 | GEANT TLS RSA 1 | — | 91 d |
| 10077 | udg.mx | A | 95 | — | – | TLS1.2 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | — | 131 d |
| 10078 | ufpr.br | A | 95 | — | – | TLS1.2 | RNP ICPEdu GR46 OV TLS CA 2025 | — | 156 d |
| 10079 | uhaul.com | A | 95 | — | – | TLS1.2 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 172 d | |
| 10080 | uj.edu.pl | A | 95 | — | – | TLS1.2 | GEANT TLS RSA 1 | — | 91 d |
| 10081 | uky.edu | A | 95 | — | – | TLS1.2 | Sectigo Public Server Authentication CA DV R36 | — | 175 d |
| 10082 | ul.pt | A | 95 | — | – | TLS1.2 | GEANT TLS RSA 1 | — | 91 d |
| 10083 | ulisboa.pt | A | 95 | — | – | TLS1.2 | GEANT TLS RSA 1 | — | 91 d |
| 10084 | um.edu.mt | A | 95 | — | — | TLS1.2 | GEANT TLS RSA 1 | — | 91 d |
| 10085 | um.edu.my | A | 95 | — | – | TLS1.2 | Thawte TLS RSA CA G1 | — | 110 d |
| 10086 | umn.edu | A | 95 | — | – | TLS1.2 | InCommon RSA OV SSL CA 3 | — | 61 d |
| 10087 | umu.se | A | 95 | — | – | TLS1.2 | Let's Encrypt | 44 d | |
| 10088 | unal.edu.co | A | 95 | — | – | TLS1.2 | Amazon RSA 2048 M04 | — | 125 d |
| 10089 | unand.ac.id | A | 95 | — | – | TLS1.2 | Sectigo Public Server Authentication CA OV R36 | — | 50 d |
| 10090 | uncc.edu | A | 95 | — | – | TLS1.2 | InCommon RSA OV SSL CA 3 | — | 78 d |
| 10091 | underconsideration.com | A | 95 | — | – | TLS1.2 | Let's Encrypt | 40 d | |
| 10092 | undrtone.com | A | 95 | — | – | TLS1.2 | Amazon RSA 2048 M01 | — | 172 d |
| 10093 | uned.es | A | 95 | — | – | TLS1.2 | GEANT TLS RSA 1 | 117 d | |
| 10094 | unh.edu | A | 95 | — | – | TLS1.2 | InCommon Intermediate CA - OVG2C | — | 90 d |
| 10095 | uni-duesseldorf.de | A | 95 | — | – | TLS1.2 | GEANT TLS ECC 1 | — | 168 d |
| 10096 | uni-passau.de | A | 95 | — | – | TLS1.2 | GEANT TLS RSA 1 | 101 d | |
| 10097 | uni-rostock.de | A | 95 | — | – | TLS1.2 | GEANT TLS RSA 1 | 37 d | |
| 10098 | uni-wuerzburg.de | A | 95 | — | – | TLS1.2 | GEANT TLS RSA 1 | 92 d | |
| 10099 | uni.lu | A | 95 | — | – | TLS1.2 | GEANT TLS RSA 1 | — | 155 d |
| 10100 | uniandes.edu.co | A | 95 | — | – | TLS1.2 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | — | 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.