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 |
|---|---|---|---|
| transat.com | #32,365 | Imperva, Microsoft 365 | Find emails |
| infranken.de | #32,379 | Chartbeat, DoubleClick (Google Ads), Google Publisher Tag + 4 more | Find emails |
| groupbycloud.com | #32,423 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 10 more | Find emails |
| #150 (Tranco) |
| Find emails |
| 5 | avast.com | #202 (Tranco) | Find emails |
| petlove.com.br |
| #32,440 |
| Cloudflare Bot Management, Cloudflare Turnstile, Cloudflare edge/CDN |
| Find emails |
| rdw.nl | #32,442 | Cloudflare edge/CDN, Google Tag Manager, Sitecore | Find emails |
| blacknightsolutions.com | #32,472 | Font Awesome, Foundation, Google Tag Manager + 8 more | Find emails |
| harmanaudio.com | #32,517 | Amazon Route 53, Cloudflare Web Analytics, Cloudflare edge/CDN + 1 more | Find emails |
| car.info | #32,520 | Bootstrap, Matomo, Nginx + 2 more | Find emails |
| medline.com | #32,555 | Cloudflare Bot Management, Cloudflare Web Analytics, Cloudflare edge/CDN + 1 more | Find emails |
| amadeus.net | #32,565 | Adobe Experience Cloud (Launch), Akamai Edge DNS, Bootstrap + 6 more | Find emails |
| cipd.org | #32,643 | Azure API Management, Cloudflare edge/CDN, Google Tag Manager + 2 more | Find emails |
| aminer.cn | #32,655 | Alibaba Cloud DNS, Baidu Analytics, Google Analytics + 2 more | Find emails |
| stocktitan.net | #32,664 | Bluesky, Google Fonts, Google Tag Manager + 1 more | Find emails |
| notetodoapps.com | #32,685 | Express, Google Fonts, Next.js + 2 more | Find emails |
| redbull.tv | #32,727 | Akamai edge/CDN, Akamai mPulse, Cloudinary + 3 more | Find emails |
| fact-finder.de | #32,768 | Apache, Consentmanager.net, CrazyEgg + 21 more | Find emails |
| netzadresse.at | #32,773 | Apache, WordPress | Find emails |
| insidehook.com | #32,779 | Amazon Route 53, Awin, DoubleClick (Google Ads) + 13 more | Find emails |
| realytics.io | #32,812 | Amazon Route 53, Microsoft 365 | Find emails |
| airtransat.com | #32,822 | ASP.NET, Azure API Management, Google Tag Manager + 3 more | Find emails |
| wurfl.io | #32,832 | Amazon Route 53, Google Analytics, HubSpot + 2 more | Find emails |
| multichain.com | #32,867 | AddThis, Apache, Bootstrap + 12 more | Find emails |
| bde.es | #32,893 | Akamai Edge DNS | Find emails |
| qlc.co.in | #32,907 | AOS, Apache, Bootstrap + 5 more | Find emails |
| alfagift.id | #32,980 | Google Cloud DNS, Google Fonts, Google Tag Manager + 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 29, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →