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.
| # | 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 |
|---|---|---|---|
| dgist.ac.kr | #78,138 | Bootstrap, Google Analytics, Google Tag Manager + 3 more | Find emails |
| jusmisiones.gov.ar | #78,164 | — | Find emails |
| primatips.com | #78,206 | Apache, Google Analytics, Google Tag Manager + 1 more | Find emails |
| #150 (Tranco) |
| Find emails |
| 5 | avast.com | #202 (Tranco) | Find emails |
| zohodesk.com |
| #78,282 |
| — |
| Find emails |
| senheng.com.my | #78,287 | Amazon Route 53, Google Tag Manager, Nginx + 6 more | Find emails |
| autonoma.edu.pe | #78,291 | ASP.NET, Meta Pixel, Microsoft IIS | Find emails |
| surreycc.gov.uk | #78,315 | CSC (Digital Brand Services), Cloudflare Bot Management, Cloudflare edge/CDN + 11 more | Find emails |
| comtrance.de | #78,338 | Apache, Google Ads Conversion, Google Analytics + 2 more | Find emails |
| marriott.co.uk | #78,352 | Adobe Experience Cloud (Launch), Akamai Bot Manager, Akamai Edge DNS + 6 more | Find emails |
| world4you.com | #78,354 | Nginx, TYPO3, Angular | Find emails |
| itk.ac.id | #78,379 | Bootstrap, Chart.js, Cloudflare + 19 more | Find emails |
| forwardemail.net | #78,386 | Cloudflare | Find emails |
| cashcrusaders.co.za | #78,418 | ASP.NET, Azure DNS, Bootstrap + 16 more | Find emails |
| uvq.edu.ar | #78,440 | All in One SEO, Apache, Font Awesome + 8 more | Find emails |
| easypay.bg | #78,454 | Apache, Bootstrap, jQuery | Find emails |
| moloni.pt | #78,463 | Google Cloud DNS | Find emails |
| museupicassobcn.cat | #78,467 | AOS, Bootstrap, DataTables + 6 more | Find emails |
| indomco.com | #78,478 | Azure Front Door, Bootstrap, Google Tag Manager + 5 more | Find emails |
| sportvision.rs | #78,494 | ConsentMo, CrazyEgg, Fancybox + 5 more | Find emails |
| rajabandotlotto.com | #78,496 | Google AMP, LiteSpeed | Find emails |
| shd.gov.co | #78,498 | Amazon Web Services, Microsoft 365 | Find emails |
| securenet.net | #78,507 | Apache | Find emails |
| zerodayinitiative.com | #78,510 | Amazon Route 53, Apache, Bluesky + 6 more | Find emails |
| thaiware.com | #78,548 | Apache, Font Awesome, Google AdSense + 10 more | Find emails |
| visitgate.com | #78,555 | Nginx, PHP | 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 →