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 |
|---|---|---|---|
| glance-cdn.com | #4,913 | Google Cloud DNS | Find emails |
| simply.com | #4,941 | Bootstrap, Cloudflare Turnstile, Google Analytics + 8 more | Find emails |
| napps-1.com | #4,950 | Cloudflare, Cloudflare edge/CDN | Find emails |
| utah.gov |
| #150 (Tranco) |
| Find emails |
| 5 | avast.com | #202 (Tranco) | Find emails |
| #4,969 |
| Akamai Edge DNS, Amazon CloudFront, Apache + 4 more |
| Find emails |
| aircanada.com | #4,993 | Akamai Bot Manager, Akamai Edge DNS, Akamai edge/CDN + 4 more | Find emails |
| service-public.fr | #4,996 | AB Tasty | Find emails |
| breitbart.com | #5,011 | Cloudflare, Disqus, DoubleClick (Google Ads) + 14 more | Find emails |
| ijg.org | #5,028 | Apache | Find emails |
| experian.com | #5,037 | Amazon CloudFront, Amazon S3, Gatsby + 2 more | Find emails |
| pearson.com | #5,081 | Akamai Bot Manager, Akamai edge/CDN, Akamai mPulse + 22 more | Find emails |
| bleepingcomputer.com | #5,087 | Cloudflare, Cloudflare Bot Management, Cloudflare Turnstile + 1 more | Find emails |
| zoho.eu | #5,140 | — | Find emails |
| zyxel.com | #5,153 | Amazon CloudFront, Cloudflare Bot Management, Cloudflare Turnstile + 12 more | Find emails |
| emarketer.com | #5,175 | ASP.NET, Amplitude, Cloudflare Bot Management + 15 more | Find emails |
| michelin.com | #5,187 | Astro, Azure Front Door, CSC (Digital Brand Services) + 2 more | Find emails |
| manchester.ac.uk | #5,191 | Amazon CloudFront, Apache, Bluesky + 8 more | Find emails |
| ebay.fr | #5,217 | Akamai Bot Manager, Akamai edge/CDN, NS1 | Find emails |
| pornoborshch.com | #5,232 | LiveInternet (Yadro), Nginx | Find emails |
| pdflib.com | #5,237 | Apache, Google Tag Manager, Microsoft 365 + 1 more | Find emails |
| larazon.es | #5,293 | Adobe Experience Cloud (Launch), Amazon Route 53, Fastly + 3 more | Find emails |
| dynu.com | #5,317 | ASP.NET, Google Analytics, Google Fonts + 5 more | Find emails |
| 247sports.com | #5,322 | Adobe Audience Manager, Adobe Fonts, Adobe Fonts (Typekit) + 28 more | Find emails |
| cleantalk.org | #5,356 | Amazon Route 53, Bootstrap, CleanTalk + 9 more | Find emails |
| uva.nl | #5,361 | Apache, Google Tag Manager, Matomo | Find emails |
| networksolutions.com | #5,392 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN | 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 →