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 |
|---|---|---|---|
| agechecker.net | #152,706 | Font Awesome, Google Analytics, Google Cloud DNS + 5 more | Find emails |
| stuttgart-tourist.de | #152,783 | Apache, Google Tag Manager, Microsoft 365 | Find emails |
| cls.fr | #152,811 | Apache, Divi, Google Analytics + 9 more | Find emails |
| #150 (Tranco) |
| Find emails |
| 5 | avast.com | #202 (Tranco) | Find emails |
| flatex.de |
| #152,820 |
| Apache, Google Tag Manager, Matomo + 1 more |
| Find emails |
| family.abbott | #152,876 | Adobe Experience Manager Edge Delivery (Helix RUM), Akamai Edge DNS, Amazon CloudFront + 3 more | Find emails |
| noticiasdecoimbra.pt | #152,901 | Bootstrap, Cloudflare, Gemius + 12 more | Find emails |
| radikal.com | #152,979 | Apache, Bootstrap, Font Awesome + 13 more | Find emails |
| pay1040.com | #153,067 | Azure API Management, Transcend, reCAPTCHA + 1 more | Find emails |
| thebmc.co.uk | #153,088 | ASP.NET, Amazon Route 53, Google Tag Manager + 5 more | Find emails |
| antikeo.com | #153,103 | Adobe Fonts, Adobe Fonts (Typekit), Bootstrap + 7 more | Find emails |
| kaarls-strafrechtadvocaten.nl | #153,110 | Fancybox, Google Analytics, Google Hosted Libraries + 6 more | Find emails |
| porsche.cn | #153,171 | Akamai edge/CDN, Astro, ConsentMo + 4 more | Find emails |
| wagepoint.com | #153,177 | Apache, BugHerd, Cloudflare + 2 more | Find emails |
| lhsystems.hu | #153,188 | Azure Front Door | Find emails |
| unishivaji.ac.in | #153,198 | ASP.NET, AddThis, Bootstrap + 5 more | Find emails |
| aboutcasemanagerjobs.com | #153,237 | Apache, Font Awesome, Google Fonts + 10 more | Find emails |
| kbs-frb.be | #153,267 | Adobe Fonts (Typekit), Cloudflare, Cloudflare edge/CDN + 7 more | Find emails |
| manulife.co.id | #153,280 | Adobe Advertising Cloud, Adobe Analytics, Adobe Audience Manager + 12 more | Find emails |
| goldenpages.uz | #153,298 | Bootstrap, Chart.js, Google AdSense + 10 more | Find emails |
| qfc.com | #153,357 | Akamai Bot Manager, Akamai edge/CDN | Find emails |
| berliner-feuerwehr.de | #153,380 | Apache, Font Awesome, Microsoft 365 + 4 more | Find emails |
| jobs.abbott | #153,397 | Adobe Experience Cloud (Launch), Akamai Edge DNS, Amazon CloudFront + 8 more | Find emails |
| worldoftheo.com | #153,426 | Apache, Google Analytics, Swiper + 2 more | Find emails |
| edaegypt.gov.eg | #153,453 | Microsoft 365, Swiper, jQuery + 1 more | Find emails |
| caymanchem.com | #153,482 | Apache, Azure DNS, Font Awesome + 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 →