A Tag That Turns Every Impression Into an Identity
IDX begins with a lightweight tag or pixel, placed in your ad server, DSP, or website. From there, it silently collects, resolves, and returns enriched identity records as your media runs.
Place the IDX Tag
A Semcasting IDX tag or pixel is placed in your ad server or on your website. It begins collecting log-level signal data: IP addresses, timestamps, device IDs, and any DSP macro values you choose to pass, with every impression or page visit.
Real-Time Resolution
Each collected signal is matched against Semcasting's national identity graph, resolving IP+timestamp combinations to verified household and business identities across 1.8B IP addresses and 450M devices.
Append Semcasting IDs
Semcasting identifiers — Trade Desk UIDs, hashed emails, MAIDs, NPIs — are appended directly to the matched records. Your data comes back enriched with owned, portable digital IDs you control.
Activate & Attribute
Use your ID-enriched records to activate audiences across platforms, run deterministic attribution, and measure performance, all without rebuilding your identity layer from scratch for each campaign.
Six Tools. One Platform. Zero Stitching.
Identity Engine
Deterministic matching that links your CRM records to verified household and device IDs, supporting every data format and delivering 85%+ average match rates within 48 hours.
Attribute Library
Access Semcasting's full library of 8,600+ demographic, behavioral, firmographic, and transactional attributes. Append to any audience segment without leaving the platform.
Lookalike Builder
Machine learning models that analyze your best-performing customer cohorts and find new prospects who share their most predictive attributes at scale, in hours.
Media Activation
Direct integrations with 40+ DSPs, SSPs, and platforms. Push audiences live same day, no minimum spend requirements.
Clean Room
Fully private data environment where your first-party data is matched, enriched, and modeled without leaving your control.
Attribution & Lift
On-demand deterministic attribution, matchback analysis, and brand lift studies, all within the same platform workflow.
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