SSL Grade Leaderboard: Top 100 Websites
Scanned from 20,000 top global websites · Updated 2026-11-06
| # | Domain | Grade | Score | 30d trend | Δ | TLS | Issuer | HSTS | Expires |
|---|---|---|---|---|---|---|---|---|---|
| 3301 | ub.gov.mn | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 31 d |
| 3302 | uba.ar | A | 100 | — | – | TLS1.3 | GlobalSign Atlas R46 DV TLS CA 2026 Q3 | — | 65 d |
| 3303 | uberant.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 43 d |
| 3304 | uberflip.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 34 d |
| 3305 | ubi.com | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | — | 113 d |
| 3306 | ubisoft.com | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | — | 116 d |
| 3307 | ubnt.com | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | — | 80 d |
| 3308 | ubu.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 51 d |
| 3309 | ubuntu-fr.org | A | 100 | — | – | TLS1.3 | GandiCert | — | 38 d |
| 3310 | ucar.edu | A | 100 | — | – | TLS1.3 | Let's Encrypt | 32 d | |
| 3311 | uccs.edu | A | 100 | — | – | TLS1.3 | Let's Encrypt | 56 d | |
| 3312 | ucd.ie | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | — | 127 d |
| 3313 | ucdavis.edu | A | 100 | — | – | TLS1.3 | Let's Encrypt | 58 d | |
| 3314 | uclan.ac.uk | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 46 d |
| 3315 | uclouvain.be | A | 100 | — | – | TLS1.3 | GEANT TLS RSA 1 | — | 93 d |
| 3316 | uco.es | A | 100 | — | – | TLS1.3 | GEANT TLS RSA 1 | — | 93 d |
| 3317 | ucop.edu | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | 135 d | |
| 3318 | ucpress.edu | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M04 | — | 106 d |
| 3319 | ucsb.edu | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 75 d |
| 3320 | uct.ac.za | A | 100 | — | – | TLS1.3 | HARICA OV TLS RSA | — | 93 d |
| 3321 | udel.edu | A | 100 | — | – | TLS1.3 | GlobalSign Atlas R46 OV TLS CA 2026 Q3 | — | 122 d |
| 3322 | udio.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 59 d |
| 3323 | udn.com | A | 100 | — | – | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | — | 72 d |
| 3324 | ufg.br | A | 100 | — | – | TLS1.3 | RNP ICPEdu GR46 OV TLS CA 2025 | — | 65 d |
| 3325 | ufl.edu | A | 100 | — | – | TLS1.3 | InCommon RSA Server CA 2 | — | 92 d |
| 3326 | ufmg.br | A | 100 | — | – | TLS1.3 | RNP ICPEdu GR46 OV TLS CA 2025 | — | 42 d |
| 3327 | ufrn.br | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 59 d |
| 3328 | ugu.pl | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 61 d |
| 3329 | uib.no | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 85 d |
| 3330 | ujaen.es | A | 100 | — | – | TLS1.3 | GEANT TLS RSA 1 | — | 120 d |
| 3331 | uk.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 44 d |
| 3332 | uk.net | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 63 d |
| 3333 | ukcop26.org | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | — | 147 d |
| 3334 | ukfinance.org.uk | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 68 d |
| 3335 | ul.com | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 69 d |
| 3336 | ulaval.ca | A | 100 | — | – | TLS1.3 | Sectigo Public Server Authentication CA OV R36 | — | 124 d |
| 3337 | ulb.ac.be | A | 100 | — | – | TLS1.3 | GEANT TLS ECC 1 | — | 98 d |
| 3338 | ulg.ac.be | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 34 d |
| 3339 | ulifestyle.com.hk | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | — | 59 d |
| 3340 | uline.com | A | 100 | — | – | TLS1.3 | DigiCert Global G3 TLS ECC SHA384 2020 CA1 | 163 d | |
| 3341 | ull.es | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 51 d |
| 3342 | ulta.com | A | 100 | — | – | TLS1.3 | GeoTrust TLS RSA CA G1 | — | 122 d |
| 3343 | umanitoba.ca | A | 100 | — | – | TLS1.3 | GlobalSign GCC R46 OV TLS CA 2025 | — | 181 d |
| 3344 | umassd.edu | A | 100 | — | – | TLS1.3 | Amazon RSA 2048 M01 | — | 90 d |
| 3345 | umc.org | A | 100 | — | – | TLS1.3 | Starfield TLS Intermediate CA DV - R1v1 | 176 d | |
| 3346 | umich.edu | A | 100 | — | – | TLS1.3 | Google Trust Services | 40 d | |
| 3347 | umsl.edu | A | 100 | — | – | TLS1.3 | InCommon ECC OV SSL CA 3 | — | 69 d |
| 3348 | umt.edu | A | 100 | — | – | TLS1.3 | InCommon RSA OV SSL CA 3 | — | 59 d |
| 3349 | un-hack-bar.de | A | 100 | — | – | TLS1.3 | Let's Encrypt | — | 67 d |
| 3350 | unaids.org | A | 100 | — | – | TLS1.3 | GeoTrust TLS RSA CA G1 | — | 155 d |
Track grade changes for your domains
Sign up free, watch your domains and get alerted the moment a grade drops.
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.