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 | 36,014 |
| Percentage of websites that use X-Pass-Why header | <0.1% |
| Total discovered header values | 14 |
| 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
429,098 websites
|
Distribution by websites popularity
X-Pass-Why detection in the top websites by popularity| Top 10k sites | 13 websites |
| Top 100k sites | 180 websites |
| Top 1m sites | 1,955 websites |
Websites utilizing X-Pass-Why
List of websites that use X-Pass-Why header| Domain | Country | Rank | Contacts |
|---|---|---|---|
|
|
United States of America
|
2,931 | |
|
|
United States of America
|
3,773 | |
|
|
United States of America
|
4,338 | |
|
|
United States of America
|
5,115 | |
|
|
United States of America
|
5,751 | |
|
|
United States of America
|
5,813 |
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 X-Pass-Why header values| Header value | Value prevalence |
|---|---|
| custom-path | 45.84% |
| special path | 28.53% |
| special param | 9.09% |
| pass-path | 4.27% |
| custom-cookie | 3.30% |
| wp-admin | 2.93% |
| logged-in | 2.79% |
| special cookie | 2.24% |
| custom-args | 0.62% |
| pass-cookie | 0.28% |
| auth | 0.06% |
| wpe-cookie | 0.04% |
| nevercache-ua | 0.00% |
| WP non-cached admin | 0.00% |