Domain data API and lookup showing backlinks, redirects, co-hosted domains, and domains sharing the same analytics or tracking IDs.
tools / builtwith
BuiltWith
Technology profiler for websites that shows the CMS, analytics, ad networks and hosting, plus a relationship tool linking sites by shared tracking IDs.
field note
The Relationships tab finds other sites sharing the same Google Analytics, AdSense or tag manager IDs, which is often how networks of sites get linked to one operator.
used in playbooks
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