HTTP response header

Header usage statistics

SSL response header information and usage statistics.

Websites using header SSL 351
Percentage of websites that use SSL header <0.1%
Total discovered header values 4
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 0 websites
Top 100k sites 1 websites
Top 1m sites 40 websites

Websites utilizing SSL

List of websites that use SSL header

Domain Country Rank Contacts Netherlands 33,597 United States of America 129,963 United States of America 259,210 United States of America 260,249 United States of America 268,352 Netherlands 309,423
See full domain list

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 99.15%
0 0.28%
1 0.28%
yes 0.28%