TechLookup.app

Security

HSTS

HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.

rfc-editor.org/rfc/rfc6797#section-6.1

Usage over time

No crawl snapshot yet.

Market share

Share of indexed sites in the category that use HSTS.

7,116 sites use HSTS

Showing the top 50. Filter and browse all sites

  • cloudflare.comsince 28 Sept 2026
  • facebook.comsince 28 Sept 2026
  • microsoft.comsince 28 Sept 2026
  • amazonaws.comsince 28 Sept 2026
  • youtube.comsince 28 Sept 2026
  • apple.comsince 28 Sept 2026
  • instagram.comsince 28 Sept 2026
  • mail.rusince 28 Sept 2026
  • fbcdn.netsince 28 Sept 2026
  • twitter.comsince 28 Sept 2026
  • dzen.rusince 28 Sept 2026
  • linkedin.comsince 28 Sept 2026
  • office.comsince 28 Sept 2026
  • live.comsince 28 Sept 2026
  • azure.comsince 28 Sept 2026
  • github.comsince 28 Sept 2026
  • wikipedia.orgsince 28 Sept 2026
  • whatsapp.netsince 28 Sept 2026
  • bing.comsince 28 Sept 2026
  • fastly.netsince 28 Sept 2026
  • cloud.microsoftsince 28 Sept 2026
  • netflix.comsince 28 Sept 2026
  • sharepoint.comsince 28 Sept 2026
  • gandi.netsince 28 Sept 2026
  • youtu.besince 28 Sept 2026
  • digicert.comsince 28 Sept 2026
  • wordpress.orgsince 28 Sept 2026
  • x.comsince 28 Sept 2026
  • skype.comsince 28 Sept 2026
  • icloud.comsince 28 Sept 2026
  • tiktok.comsince 28 Sept 2026
  • whatsapp.comsince 28 Sept 2026
  • goo.glsince 28 Sept 2026
  • pinterest.comsince 28 Sept 2026
  • yahoo.comsince 28 Sept 2026
  • roblox.comsince 28 Sept 2026
  • spotify.comsince 28 Sept 2026
  • wa.mesince 28 Sept 2026
  • msn.comsince 28 Sept 2026
  • endpoints.newssince 28 Sept 2026
  • ntp.orgsince 28 Sept 2026
  • zoom.ussince 28 Sept 2026
  • nginx.orgsince 28 Sept 2026
  • chatgpt.comsince 28 Sept 2026
  • tiktokv.comsince 28 Sept 2026
  • baidu.comsince 28 Sept 2026
  • yandex.netsince 28 Sept 2026
  • openai.comsince 28 Sept 2026
  • vimeo.comsince 28 Sept 2026
  • opera.comsince 28 Sept 2026