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 |
|---|---|---|---|
| ffgolf.org | #143,610 | Adform, Didomi, Microsoft 365 + 1 more | Find emails |
| ingenio-web.it | #143,620 | Apache, Google Analytics, Google Tag Manager + 2 more | Find emails |
| gestionpriveedesjardins.com | #143,632 | Adobe Experience Manager Edge Delivery (Helix RUM), Akamai Bot Manager, Akamai Edge DNS + 4 more | Find emails |
| #150 (Tranco) |
| Find emails |
| 5 | avast.com | #202 (Tranco) | Find emails |
| pflegecampus.de | #143,659 | Bootstrap, Foundation, Google Analytics + 8 more | Find emails |
| jfes.jus.br | #143,662 | Apache, Bootstrap, Cloudflare Turnstile + 7 more | Find emails |
| haulmer.com | #143,692 | Azure DNS, Azure Front Door, Google Tag Manager + 2 more | Find emails |
| samsunghospital.com | #143,725 | — | Find emails |
| meualelo.com.br | #143,728 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 3 more | Find emails |
| paymob.com | #143,747 | Amazon Route 53, Amazon Web Services, Microsoft 365 | Find emails |
| gipl.net | #143,752 | ASP.NET, Bootstrap, Font Awesome + 8 more | Find emails |
| assurancevoyagedesjardins.ca | #143,757 | Akamai Bot Manager, Akamai Edge DNS | Find emails |
| csmu.edu.tw | #143,776 | Nginx | Find emails |
| chuing.net | #143,802 | Apache, Cloudflare, Google Analytics + 3 more | Find emails |
| boardconnect.info | #143,829 | — | Find emails |
| portbase.com | #143,857 | Apache, Cookiebot, Google Tag Manager + 4 more | Find emails |
| globus.ch | #143,861 | Cloudflare Bot Management, Cloudflare Turnstile, Cloudflare edge/CDN + 1 more | Find emails |
| pizzaexpress.com | #143,865 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Tag Manager + 4 more | Find emails |
| sim.de | #143,868 | Nginx, Tealium | Find emails |
| grenoble.fr | #143,917 | Apache, Bluesky, PHP + 1 more | Find emails |
| vmdconseil.ca | #143,924 | Adobe Experience Manager Edge Delivery (Helix RUM), Akamai Bot Manager, Akamai Edge DNS + 4 more | Find emails |
| lichi.com | #143,929 | Akamai Edge DNS, Next.js, Nginx + 2 more | Find emails |
| register.eu | #143,940 | Apache, Google Fonts, Google Tag Manager + 4 more | Find emails |
| huflit.edu.vn | #143,958 | ASP.NET, Bootstrap, Cloudflare + 10 more | Find emails |
| zoo.org.au | #143,982 | ASP.NET, Azure API Management, Azure DNS + 6 more | Find emails |
| defense.net | #144,019 | Next.js, Tealium, The Trade Desk + 3 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-2026-08-25-full-v2), snapshot August 25, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →