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 |
|---|---|---|---|
| hosts.co.uk | #125,318 | Apache, Google Tag Manager, Underscore.js + 1 more | Find emails |
| duiadns.net | #125,321 | Bootstrap, Font Awesome, Google AdSense + 9 more | Find emails |
| lamar.com | #125,419 | ASP.NET, Adobe Experience Cloud (Launch), Amazon Route 53 + 14 more | Find emails |
| #150 (Tranco) |
| Find emails |
| 5 | avast.com | #202 (Tranco) | Find emails |
| mmm-software.at | #125,449 | Apache | Find emails |
| adeli.fr | #125,471 | Apache, PHP, jQuery | Find emails |
| miamidadeclerk.gov | #125,497 | Azure DNS, Bootstrap, Citrix NetScaler + 6 more | Find emails |
| translink.co.uk | #125,544 | Azure API Management, Google Tag Manager, Kestrel + 1 more | Find emails |
| soprasteria.com | #125,547 | ASP.NET, Amazon CloudFront, Azure API Management + 10 more | Find emails |
| chromedata.com | #125,555 | Amazon Route 53, Cloudflare Bot Management, Cloudflare Turnstile + 1 more | Find emails |
| adspeed.net | #125,566 | Apache, Bootstrap, Font Awesome + 2 more | Find emails |
| mediu.edu.my | #125,577 | ASP.NET, Amazon Route 53, Bootstrap + 8 more | Find emails |
| msvu.ca | #125,586 | Font Awesome, Google Analytics, Google Fonts + 8 more | Find emails |
| speakpipe.com | #125,643 | Bulma, Nginx, jQuery | Find emails |
| cambiumlearning.com | #125,651 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Tag Manager + 2 more | Find emails |
| iro.ke | #125,672 | Cloudflare edge/CDN | Find emails |
| nab.org | #125,697 | ASP.NET, AddThis, Bootstrap + 11 more | Find emails |
| lv.com | #125,716 | Azure DNS, Cloudflare Bot Management, Cloudflare Turnstile + 1 more | Find emails |
| summahealth.org | #125,755 | Adobe Fonts (Typekit), Bluesky, Bootstrap + 17 more | Find emails |
| embracepetinsurance.com | #125,823 | Azure Front Door, Bootstrap, Contentful + 6 more | Find emails |
| legalinfo.mn | #125,824 | Bootstrap, Font Awesome, Google Fonts + 3 more | Find emails |
| tafesa.edu.au | #125,884 | ASP.NET, Azure API Management, Azure Front Door + 9 more | Find emails |
| securehost.com | #125,890 | Gravatar, Nginx, WordPress | Find emails |
| openingstijden.com | #125,912 | Apache, Google AdSense, Google Analytics + 6 more | Find emails |
| hostmysite.ro | #125,935 | Bootstrap, Google Fonts, WhatsApp Business (click-to-chat) + 1 more | Find emails |
| zenoxserver.com | #125,948 | LiteSpeed, PHP, reCAPTCHA + 1 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 →