Map the digital footprint of any domain.

SpyOnWeb cross-references domains, Analytics snippets, AdSense publishers, nameservers and IP addresses to surface relationships you would otherwise miss, in seconds.

555,916 Domains
249,466 Analytics
54,434 AdSense
110,183 Nameservers
330,834 IPs
25 Technologies
478,456 SSL Active

Fast reconnaissance

Enter a domain or identifier and get its related assets back in real time. Good for security assessments, competitor research or due diligence.

Context you can act on

See shared Analytics, AdSense, nameservers and historic IPs in one view, so you can spot reused infrastructure and see which domains are connected.

Monitor & get alerts

Sign up free and watch up to 3 domains or codes. We email you when the SSL, title or an identifier changes. Nothing to install, no card required.

Try a lookup

Click any domain to see its relationships, IPs, technologies and certificates.