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User Agent Details:Mozilla/4.0 (compatible; MSIE 4.01; Windows NT; MSN Mobil...

On this page you can find user agent lookup and user agent checker for custom user agent, just need to paste it to input field. It's showing you user agent browser, user agent data, browser branch, name, full name and many-many others. All data user agent details that you can see here fetched on server side (without JavaScript). The full version also detects most spiders, and an assortment of uncommon browsers and other user agents. User agent detail fetch based on analysis user agent string, that you giving us, and some knowledge base thta helping to know some options like "activexcontrols", "css version".
HTTP USER AGENT - it's your user agent from request.
Browser branch name - it's common name if browser (for example for all versions of Firefox 2 (2.0.102, 2.0.104) it will be Firefox 2.0
Browser full name - version on full browser name (example Mozilla/Firefox 2.0.0.19), looking like in http user agent info
ProductSub - biggest part of cases it's date of browser update, in case of Linux and Firefox - can be like "20081216".
Additonal Info section - information about supporting technologies by browser (cookie,iframe, and other), information taken not from header - it's taken from our base.
This tool is very simple, just paste useragent to input field and push "Go" for user agent tool.
We have several libs with already parsed user agents, and it's help to explain string during lookup. Thats why result can have different length and with different fields set. The blocks that can be avaible: 1-3 blocks exactly after "Common Info" block, and 1-3 blocks of "Similar" results.
User agent sniffing refers to the practice of websites showing different content when viewed with a certain user agent. On the Internet, this will result in a different site being shown when browsing the page with a specific browser.

new window:
HTTP USER AGENT

Common Info
HTTP USER AGENTMozilla/4.0 (compatible; MSIE 4.01; Windows NT; MSN Mobile Proxy)
Browser branch nameMSN Mobile Proxy
Browser nameMSN Mobile Proxy
Browser version0.0
PlatformWin32
Operation SystemWindows NT
Browser full nameMSIE 4.01

NameMSN Mobile Proxy
Description
OrganizationMicrosoft
TypeProxy Server
Urlhttp://mim.live.com

Similar User Agents
User-AgentGeneric Mobile Phone (compatible; Googlebot-Mobile/2.1; +http://www.google.com/bot.html)
DescriptionGoogle Mobile Search crawler
Typecrawler,spider proxy
Urlhttp://www.google.com/mobile/formats.html

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.3) Gecko/2008092816 Mobile Safari 1.1.3
NameSafari
Explanation of components
MozillaThis is Mozilla based browser
5.0 Mozilla Version
X11X Window System
a windowing system for bitmap displays - http://en.wikipedia.org/wiki/X11
USecurity type - strong security
Linux i686Operation System, CPU info:
Linux - http://www.linux.org/ running on a Intel Pentium Pro CPU
en-USLanguage Tag, indicates the language for which the client had been localized (e.g. menus and buttons in the user interface) :
rv:1.9.0.3 CVS Branch Tag
The version of Gecko being used in the browser
Gecko Gecko engine inside
2008092816 Build Date:
the date the browser was built
MobileMobile Device
SafariSafari - http://www.apple.com/macosx/features/safari/
1.1.3iPhone Firmware Version
Additonal Info about inputed User Agent
win321
ismobiledevice
device_typeDesktop
device_pointing_methodmouse
commentMSN
browser_makerMicrosoft Corporation
majorver0
minorver0
win64
istablet