Domain and website
- ■Canonical and final URL
- ■Reachability and HTTP status
- ■Page title and description
- ■Response time
- ■Last scanned timestamp
Data coverage
A map of the commercial UK web.
Yellow Index starts with more than nine million UK registered domains and builds a searchable layer of website, technology, company, opportunity and contact intelligence on top.
9M+
UK domains
30+
technology families
4
signal groups
Live
scan freshness
Technology
- ■CMS and ecommerce platform
- ■Hosting, CDN and edge
- ■Analytics and marketing tools
- ■Payments and consent tooling
- ■Detection confidence and evidence
Opportunity
- ■Legacy platform signals
- ■Security header gaps
- ■SEO fundamentals
- ■Contactability
- ■Explainable pitch angles
Company and contact
- ■Company or trading name
- ■Public business email
- ■UK phone number
- ■Contact page
- ■Source and enrichment freshness
Data principles
Useful data needs context.
Public sources
Website and DNS observations are collected from publicly available business surfaces.
Freshness visible
Scan and enrichment dates make stale intelligence easier to identify.
Evidence retained
Important technology and issue signals include the observations behind them.
Suppression ready
The product roadmap includes durable correction, deletion and do-not-contact controls.
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