Surrogate-Key

HTTP response header

Header usage statistics

Surrogate-Key response header information and usage statistics.

Websites using header Surrogate-Key 3,634
Percentage of websites that use Surrogate-Key header <0.1%
Total discovered header values 2,796
Header uses directives No
Header values are unique or random No
Most popular in the country United States of America

Distribution by websites popularity

Surrogate-Key detection in the top websites by popularity

Top 10k sites 10 websites
Top 100k sites 60 websites
Top 1m sites 336 websites

Websites utilizing Surrogate-Key

List of websites that use Surrogate-Key header

Domain Country Rank Contacts
www.addthis.com United States of America 513
polyfills.trustpilot.com United States of America 711
www.lieferando.de United States of America 3,162
www.digitaltrends.com United States of America 3,262
www.thuisbezorgd.nl United States of America 4,810
cqc.org.uk United Kingdom 4,826
See full domain list
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Geographical Distribution

Header usage distribution by websites across the globe.






Common header values

List of top common Surrogate-Key header values

Header value Value prevalence
tm-front_page 3.55%
front home 1.38%
text/html 1.29%
not-found 1.13%
front post-4 post-user-1 single 0.69%
front post-2 post-user-1 single 0.66%
main_app_home_page 0.58%
welcome-miss-mary 0.47%
home 0.47%
tm-home 0.47%
klecker 0.44%
mirror-csail 0.44%
static, html 0.39%
pwa-ssr 0.36%
front post-5 post-user-1 single 0.36%
landing 0.36%
p-2 tm-front_page 0.36%
ht ht301 301 0.33%
all error 0.30%
front post-6 post-user-1 single 0.30%