X-Pass-Why
HTTP response headerThe number tells the user how many times this version of a page has been served from the cache. A MISS indicates the page was not served from cache. The x-pass-why header will tell the user the reason why the request did not hit the cache.
Header usage statistics
X-Pass-Why response header information and usage statistics.| Websites using header X-Pass-Why | 2,208 |
| Percentage of websites that use X-Pass-Why 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
|
Connected technologies
Technologies that utilize the header
WP Engine, category
Platform as a Service, total
107,060 websites
|
Distribution by websites popularity
X-Pass-Why detection in the top websites by popularity| Top 10k sites | 2 websites |
| Top 100k sites | 23 websites |
| Top 1m sites | 193 websites |
Websites utilizing X-Pass-Why
List of websites that use X-Pass-Why header| Domain | Country | Rank | Contacts |
|---|---|---|---|
|
|
United States of America
|
2,052 | |
|
|
United States of America
|
7,925 | |
|
|
United States of America
|
10,713 | |
|
|
United States of America
|
13,931 | |
|
|
United States of America
|
13,931 | |
|
|
United States of America
|
23,272 |
Geographical Distribution
Header usage distribution by websites across the globe.Common header values
List of top common X-Pass-Why header values| Header value | Value prevalence |
|---|---|
| custom-path | 93.89% |
| custom-cookie | 3.31% |
| wp-admin | 2.04% |
| auth | 0.41% |
| custom-args | 0.18% |
| logged-in | 0.09% |
| special cookie | 0.05% |
| special path | 0.05% |