HTTP response header

Header usage statistics

X-W4U-Upstream response header information and usage statistics.

Websites using header X-W4U-Upstream 4,804
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 10 websites
Top 1m sites 40 websites

Websites utilizing X-W4U-Upstream

List of websites that use X-W4U-Upstream header

Domain Country Rank Contacts
medjugorje.ws Czech Republic 10,245
www.medjugorje.ws Czech Republic 10,245
nrpraha.cz Czech Republic 25,230
www.nrpraha.cz Czech Republic 25,230
rayfilm.cz Czech Republic 33,306
www.rayfilm.cz Czech Republic 33,306
See full domain list
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-W4U-Upstream header values

Header value Value prevalence
data40_php74 19.03%
data31_php56 7.85%
data29_php53 7.74%
parking 7.33%
data35_php71 6.47%
data38_php73 5.47%
data33_php56 5.00%
data34_php56 4.33%
data37_php73 4.16%
data28_php52 4.10%
data30_php72 4.04%
data27_php4 3.73%
data27_php52 3.58%
data28_php53 3.06%
data41_php73 2.33%
data32_php74 2.23%
data26_php53 2.19%
data26_php52 1.67%
data36_php70 1.44%
data27_php53 1.23%