Surrogate-Key
HTTP response headerHeader usage statistics
Surrogate-Key response header information and usage statistics.| Websites using header Surrogate-Key | 2,907 |
| Percentage of websites that use Surrogate-Key header | <0.1% |
| Total discovered header values | 2,348 |
| Header uses directives | No |
| Header values are unique or random | No |
| Most popular in the country |  US |
Surrogate-Key Directives
Surrogate-Key directives value information and usage statistics| Directive | Share | Websites count | Unique Values |
|---|
Distribution by websites popularity
Surrogate-Key detection in the top websites by popularity| Top 10k sites | 10 websites |
| Top 100k sites | 64 websites |
| Top 1m sites | 346 websites |
Websites utilizing Surrogate-Key
List of websites that use Surrogate-Key header| Domain | Country | Rank | Contacts |
|---|---|---|---|
| US | 513 | ||
| US | 711 | ||
| US | 1,504 | ||
| US | 2,884 | ||
| US | 3,262 | ||
| US | 3,849 |
Flat price per the report, subscription is not required.
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 | 3.58% |
| text/html | 1.44% |
| wp wp200 desktop desktop200 home home200 pages pages200 type_page type_page200 200 | 1.20% |
| application text/html application:contact | 1.03% |
| pwa-ssr | 0.96% |
| mirror-isc | 0.65% |
| mirror-csail | 0.65% |
| home | 0.48% |
| klecker | 0.45% |
| front home | 0.41% |
| front post-2 post-user-1 single | 0.41% |
| front post-6 post-user-1 single | 0.41% |
| all error | 0.38% |
| front post-4 post-user-1 single | 0.34% |
| tm-home | 0.34% |
| redirect | 0.34% |
| front post-5 post-user-1 single | 0.28% |
| polyfill-service, polyfill-service-website | 0.24% |
| main_app_home_page | 0.24% |
| p-7 tm-page | 0.24% |