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 |
|---|---|---|---|---|---|---|---|---|---|
| 10501 | newsru.com | A | 93 | — | – | TLS1.2 | Let's Encrypt | — | 67 d |
| 10502 | nginx.org | A | 93 | – | TLS1.2 | Let's Encrypt | 66 d | ||
| 10503 | nih.gov | A | 93 | – | TLS1.2 | Go Daddy Secure Certificate Authority - G2 | 99 d | ||
| 10504 | nips.cc | A | 93 | — | – | TLS1.2 | GoDaddy TLS Intermediate CA DV - R1v1 | — | 111 d |
| 10505 | nmt.edu | A | 93 | — | – | TLS1.2 | Sectigo Public Server Authentication CA DV R36 | 146 d | |
| 10506 | northwestern.edu | A | 93 | — | – | TLS1.2 | InCommon Intermediate CA - DVG2C | — | 140 d |
| 10507 | noti.st | A | 93 | — | — | TLS1.2 | Let's Encrypt | — | 0 d |
| 10508 | nps.edu | A | 93 | — | – | TLS1.2 | Let's Encrypt | 54 d | |
| 10509 | nrao.edu | A | 93 | — | – | TLS1.2 | Sectigo Public Server Authentication CA DV R36 | — | 182 d |
| 10510 | occ.gov | A | 93 | — | – | TLS1.2 | Entrust OV TLS Issuing RSA CA 2 | 168 d | |
| 10511 | open.edu | A | 93 | — | – | TLS1.2 | Sectigo Public Server Authentication CA OV R36 | 61 d | |
| 10512 | opentext.com | A | 93 | — | – | TLS1.2 | Sectigo Public Server Authentication CA OV R36 | — | 85 d |
| 10513 | openwrt.org | A | 93 | — | – | TLS1.2 | Let's Encrypt | 53 d | |
| 10514 | optum.com | A | 93 | — | — | TLS1.2 | Sectigo Public Server Authentication CA OV R36 | 20 d | |
| 10515 | oralenglish.com.cn | A | 93 | — | – | TLS1.2 | WoTrus RSA OV SSL CA 2 | — | 107 d |
| 10516 | osticket.com | A | 93 | — | – | TLS1.2 | Let's Encrypt | 58 d | |
| 10517 | ou.edu | A | 93 | — | – | TLS1.2 | InCommon RSA Server CA 2 | — | 153 d |
| 10518 | ownernetworks.com | A | 93 | — | – | TLS1.2 | GoDaddy TLS Intermediate CA DV - R1v1 | 135 d | |
| 10519 | panasia.cn | A | 93 | — | — | TLS1.2 | Sectigo Public Server Authentication CA DV R36 | — | 102 d |
| 10520 | paychex.com | A | 93 | — | – | TLS1.2 | Sectigo Public Server Authentication CA OV R36 | — | 76 d |
| 10521 | penguinrandomhouse.com | A | 93 | — | – | TLS1.2 | Sectigo Public Server Authentication CA DV R36 | 63 d | |
| 10522 | pg.com | A | 93 | — | – | TLS1.2 | Sectigo Public Server Authentication CA OV R40 | — | 146 d |
| 10523 | phillymag.com | A | 93 | — | – | TLS1.2 | Let's Encrypt | — | 46 d |
| 10524 | planalto.gov.br | A | 93 | — | – | TLS1.2 | Sectigo Public Server Authentication CA OV R36 | — | 77 d |
| 10525 | pnp.ru | A | 93 | — | – | TLS1.2 | Let's Encrypt | — | 81 d |
| 10526 | princeton.edu | A | 93 | — | – | TLS1.2 | InCommon RSA OV SSL CA 3 | — | 35 d |
| 10527 | projectmanager.com | A | 93 | — | – | TLS1.2 | Let's Encrypt | 65 d | |
| 10528 | qianzhan.com | A | 93 | — | – | TLS1.2 | GoDaddy TLS Intermediate CA DV - R1v1 | — | 178 d |
| 10529 | question2answer.org | A | 93 | — | – | TLS1.2 | Let's Encrypt | — | 74 d |
| 10530 | radiko.jp | A | 93 | — | – | TLS1.2 | Sectigo Public Server Authentication CA DV R36 | — | 32 d |
| 10531 | randomhouse.com | A | 93 | — | – | TLS1.2 | Sectigo Public Server Authentication CA DV R36 | — | 161 d |
| 10532 | reactnative.dev | A | 93 | — | – | TLS1.2 | Let's Encrypt | 56 d | |
| 10533 | renfe.com | A | 93 | — | – | TLS1.2 | Sectigo Public Server Authentication CA OV R36 | 86 d | |
| 10534 | revenue.ie | A | 93 | — | – | TLS1.2 | Sectigo Public Server Authentication CA EV R36 | — | 133 d |
| 10535 | richmond.edu | A | 93 | — | – | TLS1.2 | InCommon Intermediate CA - DVG2C | — | 147 d |
| 10536 | roadsideamerica.com | A | 93 | — | – | TLS1.2 | Sectigo Public Server Authentication CA OV R36 | — | 109 d |
| 10537 | royalmail.com | A | 93 | — | – | TLS1.2 | Entrust OV TLS Issuing RSA CA 2 | — | 110 d |
| 10538 | rts.rs | A | 93 | — | – | TLS1.2 | Sectigo Public Server Authentication CA OV R36 | — | 83 d |
| 10539 | sae.org | A | 93 | — | – | TLS1.2 | GoDaddy TLS Intermediate CA DV - R1v1 | — | 82 d |
| 10540 | sagikazarmark.hu | A | 93 | — | – | TLS1.2 | Let's Encrypt | 40 d | |
| 10541 | samhsa.gov | A | 93 | — | – | TLS1.2 | HydrantID Server CA O1 | 124 d | |
| 10542 | samsung.com | A | 93 | – | TLS1.2 | Sectigo Public Server Authentication CA OV R36 | — | 166 d | |
| 10543 | scirp.org | A | 93 | — | – | TLS1.2 | Sectigo Public Server Authentication CA DV R36 | — | 60 d |
| 10544 | scol.com.cn | A | 93 | — | – | TLS1.2 | WoTrus RSA DV SSL CA 2 | — | 140 d |
| 10545 | scotsman.com | A | 93 | — | – | TLS1.2 | Let's Encrypt | — | 28 d |
| 10546 | sectigo.com | A | 93 | — | – | TLS1.2 | Sectigo Public Server Authentication CA OV R36 | — | 33 d |
| 10547 | sfasu.edu | A | 93 | — | – | TLS1.2 | InCommon RSA Server CA 2 | — | 69 d |
| 10548 | siriusxm.com | A | 93 | — | – | TLS1.2 | Sectigo Public Server Authentication CA OV R36 | 27 d | |
| 10549 | sitemeter.com | A | 93 | — | – | TLS1.2 | GoDaddy TLS Intermediate CA DV - R1v1 | — | 144 d |
| 10550 | skhynix.com | A | 93 | — | – | TLS1.2 | Sectigo Public Server Authentication CA DV R36 | 120 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.