X-W4U-Upstream
HTTP response headerHeader usage statistics
X-W4U-Upstream response header information and usage statistics.| Websites using header X-W4U-Upstream | 313 |
| Percentage of websites that use X-W4U-Upstream header | <0.1% |
| Total discovered header values | 36 |
| Header uses directives | No |
| Header values are unique or random | No |
| Most popular in the country | 
Czech Republic
|
Distribution by websites popularity
X-W4U-Upstream detection in the top websites by popularity| Top 10k sites | 0 websites |
| Top 100k sites | 9 websites |
| Top 1m sites | 40 websites |
Websites utilizing X-W4U-Upstream
List of websites that use X-W4U-Upstream header| Domain | Country | Rank | Contacts |
|---|---|---|---|
|
|
Czech Republic
|
10,245 | |
|
|
Czech Republic
|
10,245 | |
|
|
Czech Republic
|
25,230 | |
|
|
Czech Republic
|
25,230 | |
|
|
Czech Republic
|
33,306 | |
|
|
Czech Republic
|
33,306 |
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Geographical Distribution
Header usage distribution by websites across the globe.Common header values
List of top common X-W4U-Upstream header values| Header value | Value prevalence |
|---|---|
| data38_php74 | 11.82% |
| data35_php71 | 5.75% |
| data30_php72 | 5.75% |
| data25_php53 | 5.43% |
| data37_php73 | 5.43% |
| data32_php56 | 4.79% |
| data27_php52 | 4.79% |
| data29_php53 | 4.79% |
| data28_php52 | 4.47% |
| data31_php56 | 4.15% |
| parking | 3.83% |
| data25_php52 | 3.83% |
| data27_php4 | 3.83% |
| data34_php56 | 3.83% |
| data33_php56 | 3.83% |
| data26_php52 | 3.51% |
| data34_php73 | 2.56% |
| data36_php73 | 2.56% |
| data28_php53 | 1.60% |
| data36_php71 | 1.28% |