HTTP response header

Header usage statistics

ssl response header information and usage statistics.

Websites using header ssl 24,150
Percentage of websites that use ssl header <0.1%
Total discovered header values 8
Header uses directives No
Header values are unique or random No
Most popular in the country United States of America

Distribution by websites popularity

ssl detection in the top websites by popularity

Top 10k sites 1 websites
Top 100k sites 3 websites
Top 1m sites 154 websites

Websites utilizing ssl

List of websites that use ssl header

Domain Country Rank Contacts United States of America 1,047 United States of America 65,097 United States of America 93,494 Canada 124,245 Canada 124,245 United States of America 124,348
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Geographical Distribution

Header usage distribution by websites across the globe.

Common header values

List of top common ssl header values

Header value Value prevalence
Strict-Transport-Security: max-age=31536000; includeSubdomains; preload 99.95%
0 0.02%
yes 0.01%
Content-Security-Policy: upgrade-insecure-requests 0.00%
false 0.00%
Lets Encrypt 0.00%
no 0.00%
true 0.00%