HTTP response header

A browser's user agent string (UA) helps identify which browser is being used what version and on which operating system

Header usage statistics

X-User-Agent response header information and usage statistics.

Websites using header X-User-Agent 3,188
Percentage of websites that use X-User-Agent header <0.1%
Total discovered header values 32
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-User-Agent detection in the top websites by popularity

Top 10k sites 4 websites
Top 100k sites 24 websites
Top 1m sites 155 websites

Websites utilizing X-User-Agent

List of websites that use X-User-Agent header

Domain Country Rank Contacts
ameblo.jp United States of America 328
bitly.com United States of America 634
www.garmin.com United States of America 6,710
www.manta.com United States of America 9,015
www.expressvpn.com United States of America 12,672
santemagazine.fr France 19,342
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-User-Agent header values

Header value Value prevalence
desktop 64.81%
standard 37.39%
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.190 Safari/537.36 4.20%
|standard 2.26%
standard-- 0.53%
default 0.50%
US|standard 0.19%
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv: Gecko/2009021910 Firefox/3.0.7 0.19%
Expanse, a Palo Alto Networks company, searches across the global IPv4 space multiple times per day to identify customers&#39; presences on the Internet. If you would like to be excluded from our scans, please send IP addresses/domains to: scaninfo@paloal 0.13%
Mozilla/5.0 (compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) 0.13%
newspaper/0.2.8 0.13%
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.139 Safari/537.36 0.09%
Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/) 0.09%
Mozilla/5.0 (Macintosh; Intel Mac OS X 11.1; rv:84.0) Gecko/20100101 Firefox/84.0 0.06%
Amazon CloudFront 0.03%
COMBELL_monitor 0.03%
Device(type='Desktop', browser='Chrome', os='Windows', ip='', connection_type='Wi-Fi') 0.03%
ias-va/3.1 (+https://www.admantx.com/service-fetcher.html) 0.03%
Mozilla/5.0 (compatible; Linespider/1.1; +https://lin.ee/4dwXkTH) 0.03%
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.159 Safari/537.36 0.03%