SSL/TLS Certificates
33,361 of the 1,000,000 top sites in our Tranco top-1M census run Sectigo (3.3%). A certificate authority that issues SSL/TLS certificates used to secure websites with HTTPS. Detection is homepage-level HTML/header fingerprinting, so a site can run Sectigo on other pages without it showing here.
Other ssl/tls certificates
| # | Domain | Global traffic rank | Contacts |
|---|---|---|---|
| 1 | github.com | #29 (Tranco) | Find emails |
| 2 | roblox.com | #73 (Tranco) | Find emails |
| 3 | nginx.com | #95 (Tranco) | Find emails |
| 4 | f5.com |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| tjsc.jus.br | #62,525 | — | Find emails |
| identidadedigital.pr.gov.br | #62,574 | — | Find emails |
| kofax.com | #62,576 | ASP.NET, Azure Front Door, Google Tag Manager + 4 more | Find emails |
| #150 (Tranco) |
| Find emails |
| 5 | avast.com | #202 (Tranco) | Find emails |
| szlcsc.com |
| #62,580 |
| Alibaba Cloud CDN, Alibaba Cloud DNS, Alibaba Cloud OSS + 8 more |
| Find emails |
| simplybuilder.io | #62,643 | Amazon Route 53, HubSpot, Nginx + 1 more | Find emails |
| worldcommunitygrid.org | #62,648 | Apache | Find emails |
| getjerry.com | #62,662 | Amazon CloudFront, Amazon Cognito, Amazon Route 53 + 19 more | Find emails |
| mourjan.com | #62,684 | Amazon Route 53, Google AdSense, Google Analytics + 4 more | Find emails |
| klm.nl | #62,694 | Akamai Bot Manager, Akamai Edge DNS, Akamai edge/CDN + 2 more | Find emails |
| kao-kirei.com | #62,767 | Adobe Experience Cloud (Launch), Amazon CloudFront, Amazon Route 53 + 7 more | Find emails |
| hubweb.net | #62,784 | Bootstrap, Google Analytics, Nginx + 2 more | Find emails |
| homestoreandmore.ie | #62,813 | Cloudflare edge/CDN, DoubleClick (Google Ads), Google Analytics + 14 more | Find emails |
| yollacalls.com | #62,817 | CookieYes, Google Fonts, Google Hosted Libraries + 8 more | Find emails |
| web4ce.cz | #62,858 | Apache, Google Analytics, PHP + 1 more | Find emails |
| uph.edu | #62,859 | Cloudflare, Font Awesome, Google Ads Conversion + 8 more | Find emails |
| gratis.com | #62,906 | Cloudflare, Google Fonts, Google Tag Manager + 3 more | Find emails |
| ubet.kz | #62,911 | — | Find emails |
| mt.de | #62,988 | Apache, Consentmanager.net, Google Tag Manager + 7 more | Find emails |
| bez-kompleksov.com | #63,025 | Azure Front Door, Cloudflare, Meta Pixel + 1 more | Find emails |
| lalpathlabs.com | #63,037 | Amazon Route 53, Google Tag Manager, Gravatar + 5 more | Find emails |
| stil.dk | #63,049 | Cludo, Matomo | Find emails |
| kingsoopers.com | #63,104 | Akamai Bot Manager, Akamai edge/CDN | Find emails |
| icgc.cat | #63,121 | Apache, Bootstrap, Drupal + 6 more | Find emails |
| edinburghzoo.org.uk | #63,126 | Apache, Drupal, GoDaddy | Find emails |
| hc.edu.tw | #63,179 | ASP.NET, Bootstrap, Google Analytics + 3 more | Find emails |
Showing the first 10,000matches — add a filter to narrow.
From the Crawlora Website Tech Stack Dataset, a homepage-level fingerprint of a 1,000,000-domain Tranco top-1M census (run top1m-2026-08-25-full-v2), snapshot August 25, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →