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 |
|---|---|---|---|
| nc.com | #12,838 | Amazon Route 53, Envoy, Google Fonts + 4 more | Find emails |
| fisglobal.com | #12,840 | AOS, Akamai Edge DNS, Apache + 3 more | Find emails |
| renfe.com | #12,891 | Adobe Experience Cloud (Launch), Adobe Experience Manager Edge Delivery (Helix RUM), Akamai Edge DNS + 3 more | Find emails |
| #150 (Tranco) |
| Find emails |
| 5 | avast.com | #202 (Tranco) | Find emails |
| dwd.de | #12,907 | Apache, Bluesky, Font Awesome + 1 more | Find emails |
| 101domain.com | #12,911 | Cloudflare, Cloudflare Stream, Cloudflare Web Analytics + 6 more | Find emails |
| devpost.com | #12,959 | AWS Lambda, Cloudflare edge/CDN, Font Awesome + 18 more | Find emails |
| papaki.gr | #12,962 | Bootstrap, Cloudflare, Font Awesome + 7 more | Find emails |
| ulaval.ca | #13,008 | Adobe Fonts (Typekit), Drupal, Google Tag Manager + 2 more | Find emails |
| kpn.net | #13,019 | Adobe Experience Cloud (Launch), Amazon CloudFront, Contentful + 4 more | Find emails |
| piensasolutions.com | #13,034 | Apache | Find emails |
| ashleyfurniture.com | #13,039 | CSC (Digital Brand Services), Fastly, Microsoft 365 + 2 more | Find emails |
| renault.com | #13,040 | Dynatrace, Google Tag Manager, Hotjar + 5 more | Find emails |
| rtb-oveeo.com | #13,055 | — | Find emails |
| gtdinternet.com | #13,056 | Azure Front Door, Bootstrap, Google Fonts + 5 more | Find emails |
| tide.co | #13,067 | AppsFlyer, Bootstrap, Cloudflare + 6 more | Find emails |
| fasthosts.co.uk | #13,068 | ASP.NET, Apache, Astro + 4 more | Find emails |
| arkansas.gov | #13,084 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Fonts + 4 more | Find emails |
| securestudies.com | #13,108 | ASP.NET, Amazon Route 53 | Find emails |
| napps-2.com | #13,129 | Cloudflare, Cloudflare edge/CDN | Find emails |
| lieferando.de | #13,146 | Amazon Route 53, Cloudflare Bot Management, Cloudflare Turnstile + 1 more | Find emails |
| websense.com | #13,171 | Amazon Route 53, Drupal, Netlify + 4 more | Find emails |
| phonearena.com | #13,173 | Cloudflare, Cloudflare Bot Management, Cloudflare Turnstile + 1 more | Find emails |
| caf.fr | #13,187 | Drupal, Dynatrace, YouTube | Find emails |
| roistat.com | #13,192 | Cloudflare, Google Analytics, Google Tag Manager + 3 more | Find emails |
| ncku.edu.tw | #13,212 | Apache, jQuery | 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 29, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →