RatioLookup by RatioWorks

Privacy-first phone, email, and mail-header intelligence with local analysis, explainable risk signals, and optional public-web lookup.

Available on Firefox for Android™

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About this extension

RatioLookup is a privacy-focused phone number, email address, and email-header intelligence tool from RatioWorks.
Analyze information directly from Firefox with an emphasis on understandable results and minimal data exposure.
Features
Phone-number format and numbering-region analysis
Email address and domain analysis
Email-header and mail-routing inspection
SPF, DKIM, and DMARC result interpretation when present in supplied headers
Explainable risk indicators showing why a result was flagged
Public-web lookup available only when explicitly requested
Context-menu lookup for selected text
Copyable reports and diagnostic information
Responsive interface designed for Firefox desktop and Android

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RatioLookup by RatioWorks

Data collection:

Optional data collection, according to the developer: