CTV pixel attribution in India uses IP-based household matching — not cookies. When a viewer is served a CTV ad, the DSP records the household's IP address and the timestamp. When that same IP later appears on a website pixel event (page view, checkout, purchase) or in an MMP app conversion log, the DSP matches the two events and reports the conversion as view-through attributed to the CTV exposure.
This works reasonably well for households on fixed broadband (JioFiber, Airtel fiber, BSNL broadband) where the IP is stable enough to create a reliable link between CTV exposure and subsequent web behaviour. It fails for mobile hotspots: a viewer watching JioHotstar on a TV connected to a mobile data router may share an IP with dozens of nearby devices, none of which are in the same household.
What attribution windows are standard for India CTV?
View-through attribution windows define how long after a CTV ad exposure a conversion can be credited to that exposure. Standard options:
- 1 day — DV360 default. Very conservative. Only captures immediate response. Appropriate for impulse-purchase categories (food delivery, quick commerce).
- 7 days — Industry-standard starting point. Balances recency against realistic consideration cycles for most categories.
- 14 days — Suitable for higher-consideration categories: consumer electronics, BFSI, automotive.
- 30 days — TTD default. Common in India agency campaigns but tends to inflate attribution by capturing conversions that would have happened regardless of ad exposure.
There is no India-specific standard. Start at 7 days and compare against a holdout group if possible — that is the only way to separate genuine lift from coincidental conversion.
Why is pixel attribution less reliable in India than in the US or UK?
Three structural factors reduce reliability:
- Mobile hotspot IP failure — A large proportion of India CTV viewers connect their smart TV to a mobile 4G/5G router. Mobile carrier IPs are shared, dynamic, and do not map to a fixed household. DSP pixel matching fails for these households.
- Dynamic residential IP rotation — Indian ISPs rotate residential IPs more frequently than Western providers. A household's IP may change between the CTV ad exposure and the subsequent web visit, breaking the attribution chain.
- Shared IPs in dense urban settings — Apartment buildings with shared building-level internet connections, university hostels, and large housing societies can share a single IP across 20–50 households. Any conversion on that IP gets attributed to any ad served to that IP block.