Websites using Strict-Transport-Security (HSTS)
Forces browsers to only connect over HTTPS, preventing protocol-downgrade attacks.
415 websites in our index present this header.
w3.org
W3C
discord.com
Discord - Group Chat That’s All Fun & Games
discord.gg
Discord - Group Chat That’s All Fun & Games
myfritz.net
Logging into MyFRITZ!Net
onesignal.com
Customer Engagement Platform for Email, Push… - OneSignal
sedo.com
Buy. Park. Sell. Domains | Sedo - World's leading Domain marketplace
python.org
Welcome to Python.org
verisign.com
A global provider of domain name registry services and internet infrastructure | Verisign
shop.app
Just a moment...
independent.co.uk
Independent Asia Edition
nike.com
Nike. Just Do It. Nike IN
playstation.com
PlayStation® Official Site: Consoles, Games, Accessories & More
ft.com
Just a moment...
indiatimes.com
Indiatimes: Latest in Lifestyle, Health, Fashion, and Wellness
addtoany.com
AddToAny: Share Buttons by the Universal Sharing Platform
duckduckgo.com
DuckDuckGo - Protection. Privacy. Peace of mind.
t-mobile.com
T-Mobile® Official Site | Best 5G Network & Unlimited Data Plans
onelink.me
Deep Linking Software Solutions | AppsFlyer OneLink
amazontrust.com
Amazon Trust Services
slack.com
Slack | AI work platform and productivity tools
Frequently asked questions
What is Strict-Transport-Security (HSTS)?
Forces browsers to only connect over HTTPS, preventing protocol-downgrade attacks.
How many websites in the SiteGraph index present Strict-Transport-Security (HSTS)?
415 websites in our index present this header.
Explore more: all security headers, technologies, or countries.