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 |
|---|---|---|---|
| spp.gov.cn | #51,287 | OpenResty | Find emails |
| ms.com | #51,300 | Adobe Advertising Cloud, Adobe Analytics, Adobe Audience Manager + 42 more | Find emails |
| chronoengine.com | #51,326 | Alibaba Cloud DNS | Find emails |
| telepass.com |
| #150 (Tranco) |
| Find emails |
| 5 | avast.com | #202 (Tranco) | Find emails |
| #51,338 |
| Contentful, Gatsby, Google Cloud + 4 more |
| Find emails |
| uwf.edu | #51,355 | ASP.NET, Adobe Fonts (Typekit), Amazon CloudFront + 22 more | Find emails |
| glowing.com | #51,358 | Amazon Route 53, Google Fonts, Meta Pixel + 3 more | Find emails |
| unicef.de | #51,359 | Azure Front Door, Microsoft 365, Next.js + 4 more | Find emails |
| monsoon.co.uk | #51,369 | Adyen, Cloudflare edge/CDN, ConsentMo + 7 more | Find emails |
| fordforums.com.au | #51,381 | Apache, Google AdSense, Google Hosted Libraries + 2 more | Find emails |
| xhand.com | #51,427 | Fancybox, Foundation, Google Analytics + 4 more | Find emails |
| servsafe.com | #51,447 | ASP.NET, Bootstrap, Font Awesome + 9 more | Find emails |
| blackcircles.com | #51,493 | Cloudflare, Cloudflare edge/CDN, Google Tag Manager + 3 more | Find emails |
| amplimed.com.br | #51,506 | Apache, Cloudflare, LiteSpeed + 2 more | Find emails |
| cinvestav.mx | #51,522 | ASP.NET, Bootstrap, Font Awesome + 10 more | Find emails |
| netscout.com | #51,548 | CSC (Digital Brand Services), Drupal, Fastly + 4 more | Find emails |
| lnwfile.com | #51,631 | Nginx | Find emails |
| juedische-allgemeine.de | #51,669 | Bluesky, Matomo, WhatsApp Business (click-to-chat) + 3 more | Find emails |
| advisory.com | #51,726 | Adobe Experience Cloud (Launch), Amazon CloudFront, Amazon S3 + 5 more | Find emails |
| coqui.net | #51,740 | Apache, Bootstrap, Font Awesome + 2 more | Find emails |
| annauniv.edu | #51,777 | Apache, Bootstrap, Font Awesome + 7 more | Find emails |
| worldline.com | #51,783 | Adobe Experience Cloud (Launch), Apache, Bootstrap + 11 more | Find emails |
| ktmb.com.my | #51,805 | Bootstrap, Font Awesome, Google Analytics + 9 more | Find emails |
| formel1.de | #51,818 | Google Analytics, Google Tag Manager, Nginx + 3 more | Find emails |
| ancv.com | #51,831 | Bootstrap, ConsentMo, Drupal + 4 more | Find emails |
| zaaztelecom.com.br | #51,843 | Adobe Fonts (Typekit), Cloudflare edge/CDN, Font Awesome + 5 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 →