Expect-CT directives (3 total)
- enforce
- max-age
- report-uri
The Expect-CT header allows sites to opt in to reporting and/or enforcement of Certificate Transparency requirements which prevents the use of misissued certificates for that site from going unnoticed
Websites using header Expect-CT | 6,736,887 |
Percentage of websites that use Expect-CT header | 6.67% |
Total discovered header values | 8,013 |
Header uses directives | Yes |
Header values are unique or random | No |
Most popular in the country | ![]() |
Directive | Share | Websites count | Unique Values |
---|---|---|---|
max-age | 99.98% | 6,735,445 | 59 |
report-uri | 97.72% | 6,583,374 | 514 |
enforce | 1.80% | 121,562 | 38 |
Top 10k sites | 2,159 websites |
Top 100k sites | 20,526 websites |
Top 1m sites | 185,727 websites |
Domain | Country | Rank | Contacts |
---|---|---|---|
![]() | 14 | ||
![]() | 14 | ||
![]() | 19 | ||
![]() | 20 | ||
![]() | 21 | ||
![]() | 26 |
Header value | Value prevalence |
---|---|
max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct" | 97.10% |
max-age=7776000, enforce | 0.80% |
max-age=0 | 0.54% |
enforce, max-age=21600 | 0.16% |
max-age=31536000, report-uri="http://csp.yahoo.com/beacon/csp?src=yahoocom-expect-ct-report-only" | 0.10% |
max-age=86400 | 0.09% |
max-age=86400, enforce | 0.06% |
enforce; max-age=3600 | 0.06% |
enforce, max-age=86400, report-uri="https://hpage-report.uriports.com/reports/enforce" | 0.05% |
enforce, max-age=31536000 | 0.04% |
enforce, max-age=300 | 0.03% |
enforce; max-age=2592000; | 0.03% |
max-age=30 | 0.03% |
max-age=0, report-uri="/report-expect-ct-violation" | 0.03% |
enforce,max-age=2592000 | 0.03% |
enforce, max-age=3600 | 0.03% |
enforce, max-age=86400 | 0.02% |
max-age=31536000, enforce | 0.02% |
enforce; max-age=30 | 0.02% |
report-uri="https://oktaexpectct.report-uri.com/r/t/ct/reportOnly", max-age=0 | 0.02% |