SSL Certificates

HSTSHSTS

HSTS Usage Statistics · Download List of All Websites using HSTS

Forces browsers to only communicate with the site using HTTPS.

Operating Systems and Servers

QUICQUIC

QUIC Usage Statistics · Download List of All Websites using QUIC

Quick UDP Internet Connections, pronounced quick is a transport layer network protocol developed by Google.

Web Servers

nginxnginx

nginx Usage Statistics · Download List of All Websites using nginx

nginx [engine x] is a HTTP server and mail proxy server written by Igor Sysoev.

Document Standards

HTML5 DocTypeHTML5 DocType

HTML5 DocType Usage Statistics

The DOCTYPE is a required preamble for HTML5 websites.

Strict Transport SecurityStrict Transport Security

Strict Transport Security Usage Statistics

The HTTP Strict-Transport-Security (HSTS) header instructs the browser to only use https.

Profile Details

Link to this page. This profile will be updated 24th January 2025.

Add BuiltWith to for free! Get lookups easily and quickly.

Get a notification when 27139.co adds new technologies.

Get 27139.co profile as an XML, JSON, CSV or XLSX via the Domain API.

Suggest a Technology

Can't find the technology you are looking for? Send us a suggestion, we will try and add it to our database.