SSL/TLS Certificates
30,905 of the 1,000,000 top sites in our Tranco top-1M census run Sectigo (3.1%). 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 |
|---|---|---|---|
| dxfeed.com | #41,006 | Adobe Fonts (Typekit), Cloudflare Bot Management, Cloudflare edge/CDN + 8 more | Find emails |
| privalia.com | #41,007 | Cloudflare Bot Management, Cloudflare Web Analytics, Cloudflare edge/CDN + 1 more | Find emails |
| equalityhumanrights.com | #41,031 | Cloudflare, Cloudflare Bot Management, Cloudflare Turnstile + 2 more | Find emails |
| #150 (Tranco) |
| Find emails |
| 5 | avast.com | #202 (Tranco) | Find emails |
| smartolt.com | #41,043 | Apache, Bootstrap, Cookiebot + 6 more | Find emails |
| landwirt.com | #41,051 | Microsoft 365, Nginx, Nuxt.js + 2 more | Find emails |
| natemat.pl | #41,064 | Cloudflare, Nginx, Taboola + 1 more | Find emails |
| medcom.id | #41,070 | Ahrefs Analytics, DoubleClick (Google Ads), Font Awesome + 12 more | Find emails |
| thuisarts.nl | #41,075 | Drupal, Microsoft 365, Nginx + 3 more | Find emails |
| assurant.com | #41,111 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Fonts + 12 more | Find emails |
| sabah.gov.my | #41,112 | Bootstrap, ConsentMo, Drupal + 11 more | Find emails |
| bgs.ac.uk | #41,122 | Adobe Fonts (Typekit), Azure DNS, Bootstrap + 10 more | Find emails |
| agilone.com | #41,151 | Amazon Route 53, CHEQ, Cloudflare edge/CDN + 8 more | Find emails |
| samsungvx.com | #41,161 | Amazon CloudFront, Amazon Route 53, Amazon S3 | Find emails |
| soscisurvey.de | #41,215 | Nginx | Find emails |
| tu.ac.th | #41,287 | Adobe Fonts (Typekit), Microsoft 365, Slick Carousel + 4 more | Find emails |
| isbe.net | #41,303 | ASP.NET, AddToAny, AngularJS + 8 more | Find emails |
| antwerpen.be | #41,360 | Microsoft 365, Next.js, Turbopack + 2 more | Find emails |
| grabweb.in | #41,369 | All in One SEO, Google Fonts, Microsoft 365 + 2 more | Find emails |
| uhg.com | #41,417 | Adobe Experience Cloud (Launch), Brightcove, Fastly + 1 more | Find emails |
| ixlhosting.nl | #41,471 | Nginx | Find emails |
| ontariotechu.ca | #41,496 | AddThis, Apache, Google Analytics + 3 more | Find emails |
| gseb.org | #41,555 | ASP.NET, Microsoft IIS, jQuery | Find emails |
| changiairport.com | #41,575 | Adobe Experience Manager Edge Delivery (Helix RUM), Amazon CloudFront, Amazon Route 53 + 6 more | Find emails |
| lieferando.at | #41,590 | Amazon Route 53, Cloudflare Bot Management, Cloudflare Turnstile + 1 more | Find emails |
| roblox.co.uk | #41,594 | Cloudflare Bot Management, Cloudflare Web Analytics, Cloudflare edge/CDN + 1 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-2026-08-24-full), snapshot August 24, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →