Top Improving Websites — SSL Score Gains (30 days)
Scanned from 20,000 top global websites · Updated 2026-11-03
| # | Domain | Grade | Score | 30d trend | Δ | TLS | Issuer | HSTS | Expires |
|---|---|---|---|---|---|---|---|---|---|
| 1 | launchpad.net | A+ | 100 | +35 | TLS1.3 | Let's Encrypt | 30 d | ||
| 2 | telegram.me | A | 98 | +23 | TLS1.3 | GoDaddy TLS Intermediate CA DV - R1v1 | — | 167 d | |
| 3 | nginx.org | A | 93 | +20 | TLS1.2 | Let's Encrypt | 71 d | ||
| 4 | samsung.com | A | 93 | +20 | TLS1.2 | Sectigo Public Server Authentication CA OV R36 | — | 171 d | |
| 5 | ibm.com | A | 95 | +15 | TLS1.2 | DigiCert Global G3 TLS ECC SHA384 2020 CA1 | 174 d | ||
| 6 | en.wikipedia.org | A+ | 98 | +13 | TLS1.3 | Let's Encrypt | 60 d | ||
| 7 | stanford.edu | A | 95 | +10 | TLS1.2 | InCommon Intermediate CA - DVG2C | — | 193 d | |
| 8 | github.io | A | 100 | +8 | TLS1.3 | Let's Encrypt | — | 57 d | |
| 9 | wikipedia.org | A+ | 98 | +8 | TLS1.3 | Let's Encrypt | 60 d | ||
| 10 | amazon.com | A+ | 100 | +5 | TLS1.3 | GeoTrust TLS RSA CA G1 | 154 d | ||
| 11 | bloomberg.com | A+ | 100 | +5 | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 88 d | ||
| 12 | debian.org | A+ | 100 | +5 | TLS1.3 | Let's Encrypt | 70 d | ||
| 13 | github.com | A+ | 100 | +5 | TLS1.3 | Sectigo Public Server Authentication CA DV E36 | 86 d | ||
| 14 | gnu.org | A+ | 100 | +5 | TLS1.3 | Let's Encrypt | 33 d | ||
| 15 | line.me | A+ | 100 | +5 | TLS1.3 | GlobalSign GCC R46 OV TLS CA 2025 | 118 d | ||
| 16 | microsoft.com | A | 98 | +5 | TLS1.3 | Microsoft TLS G2 RSA CA OCSP 04 | — | 88 d | |
| 17 | nasa.gov | A+ | 98 | +5 | TLS1.3 | Let's Encrypt | 69 d | ||
| 18 | office.com | A | 100 | +5 | TLS1.3 | Microsoft TLS G2 RSA CA OCSP 04 | — | 79 d | |
| 19 | outlook.live.com | A+ | 100 | +5 | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 178 d | ||
| 20 | paypal.com | A+ | 100 | +5 | TLS1.3 | DigiCert Global G2 TLS RSA SHA256 2020 CA1 | 159 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 weighted 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.