HTTP response header

Header usage statistics

X-Upstream response header information and usage statistics.

Websites using header X-Upstream 24,737
Percentage of websites that use X-Upstream header <0.1%
Total discovered header values 1,268
Header uses directives No
Header values are unique or random No
Most popular in the country United States of America

Distribution by websites popularity

X-Upstream detection in the top websites by popularity

Top 10k sites 14 websites
Top 100k sites 69 websites
Top 1m sites 401 websites

Websites utilizing X-Upstream

List of websites that use X-Upstream header

Domain Country Rank Contacts
www.aparat.com Iran, Islamic Republic of 1,590
vp.rambler.ru Russian Federation 1,869
www.dell.com United States of America 1,999
gitter.im United States of America 2,318
www.linode.com United States of America 2,373
www.coe.int France 2,407
See full domain list
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Geographical Distribution

Header usage distribution by websites across the globe.

Common header values

List of top common X-Upstream header values

Header value Value prevalence 6.33% 6.23% 6.14% 5.97% 4.70% 3.44% 3.42% 3.41% 3.35% 3.35% 3.27% 3.27% 3.13% : 2.75% 2.68% 2.36%
suitedash 1.87% 1.50%
cluster 1.44%
PHP7.0 1.33%