Classic ASP is Microsoft's original server-side scripting technology (`.asp` pages on IIS), before ASP.NET. It is still found on older business sites. AIWebsiteDetector reports it from an `X-Powered-By: ASP` header (distinct from `ASP.NET`), the `ASPSESSIONID…` session cookie and relative `.asp` links. A site that hides these cannot be identified from outside.
Paste any URL to instantly detect whether it was built with Classic ASP. Our engine checks 1 technical signals.
Classic ASP is used across many industries. These are the most common website types built on this platform:
Businesses of all sizes
Fast, reliable site building with professional results
Designers and developers
Powerful tools with minimal setup
Startups
Quick launch with scalable infrastructure
Content creators
Beautiful presentation for your work
Every Classic ASP website leaves distinctive technical fingerprints. Here's what to look for:
Explore how Classic ASP compares to similar backend framework tools:
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