Detect Application Request Routing
Application Request Routing (ARR) is an extension to Internet Information Server (IIS), which enables an IIS server to function as a load balancer.
Detection looks at response headers across 1 fingerprint rules among the site's public responses.
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Websites using Application Request Routing
Loading website list…
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Signal classes
PluginView evaluates public page signals in these classes when identifying Application Request Routing. Individual fingerprint rule bodies are proprietary and are not published.
- Response headers
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Example public indicators for Application Request Routing
Illustrative indicators derived from public catalog metadata for Application Request Routing. A live scan may match additional proprietary rules beyond these examples.
- x-powered-by: ARR/
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What a detection means
- Establishes
- One or more public signals on the scanned page matched a known Application Request Routing signature (1 rules) at the time of the scan.
- Does not establish
- A sitewide install of Application Request Routing, an active vendor contract, exclusive use, or that Application Request Routing is still in place today.
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How to check a site for Application Request Routing
- 1. Enter the website URL in the scan form — homepage, pricing, checkout, or login pages usually expose the strongest Application Request Routing signals.
- 2. PluginView reads only public responses (response headers) and scores them against the Application Request Routing signature set (1 rules).
- 3. Review the confidence score and text explanation for Application Request Routing on the results page.
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Commonly implies
A confirmed Application Request Routing match also implies these technologies are present.
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FAQ: detecting Application Request Routing
- Can PluginView detect Application Request Routing without logging in?
- Yes. PluginView only reads publicly accessible responses when checking for Application Request Routing — typically response headers. It does not bypass authentication or paywalls.
- What category is Application Request Routing?
- Application Request Routing is classified under Load balancers in the PluginView directory.
- How many fingerprint rules cover Application Request Routing?
- This reference currently tracks 1 fingerprint rule across response headers. Individual rule bodies are proprietary and are not published.
- What public signals suggest a site uses Application Request Routing?
- Illustrative public indicators for Application Request Routing include x-powered-by: ARR/. A live scan may match additional proprietary rules beyond these examples.
