HTTP response header

Header usage statistics

X-Vary response header information and usage statistics.

Websites using header X-Vary 665
Percentage of websites that use X-Vary header <0.1%
Total discovered header values 12
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-Vary detection in the top websites by popularity

Top 10k sites 4 websites
Top 100k sites 6 websites
Top 1m sites 52 websites

Websites utilizing X-Vary

List of websites that use X-Vary header

Domain Country Rank Contacts
www.independent.co.uk United States of America 170
www.aftenposten.no Norway 1,566
www.chabad.org United States of America 2,196
www.vikingrivercruises.com United States of America 5,960
www.chabadpoway.com United States of America 14,465
www.bt.no Norway 98,206
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Geographical Distribution

Header usage distribution by websites across the globe.

Common header values

List of top common X-Vary header values

Header value Value prevalence
User-Agent 93.68%
Accept-Encoding 2.56%
* 1.35%
Cookie 0.75%
Cookie,Accept-Encoding 0.30%
User-Agent,Accept-Encoding 0.30%
x-sch-device, Accept-Encoding 0.30%
Accept-Encoding, Accept-Encoding, X-Norm-UA, X-CB 0.15%
Accept-Encoding, User-Agent 0.15%
X-app, Accept-Encoding 0.15%
x-sch-device,X-Backend, Accept-Encoding 0.15%
X-User-Hash,Accept-Encoding 0.15%