SpyOnWeb is a free web tool that shows how domains, tracking codes, advertising IDs and infrastructure overlap. You get context instantly, right in your browser, with nothing to install.
Investigators, journalists and growth teams often need to connect scattered digital assets. SpyOnWeb pulls the core correlation tools into one web app you can use straight away. Type a domain or an identifier and get the relationships back.
It cross-references domains, IP history, Analytics IDs, AdSense publishers and nameservers to show you what connects to what. With a free account you can also watch up to 3 domains or codes and get email alerts whenever something changes.
Everything runs in your browser, with nothing to download or configure. Sign up free, no card required, and start looking up and monitoring domains in seconds.
SpyOnWeb is intended for research, due diligence and security investigations. Always respect local laws and terms of service for the domains you analyse.
The free account includes 3 monitors. Basic (€6, 6 monitors) and Pro (€24, 50 monitors) plans are coming soon with more capacity and more frequent checks. We would love your feedback as we keep improving the service.
Watch up to 3 domains or codes and get email alerts the moment something changes. Nothing to install, no card required.
Sign up free