Household graph

A household graph is an identity dataset that groups the people, devices, IP addresses and identifiers that share a home into one household record, used to target, cap and measure advertising at household level.

Connected TV is watched by households, not single people, and most homes have several phones, laptops and TVs. A household graph links them. It is built from deterministic links, such as a login used on both a TV app and a phone, and from postal and email records. Probabilistic signals add more links, such as devices that share an IP address overnight.

LiveRamp's documentation describes one method. Its AbiliTec technology resolves names, postal addresses, emails and phone numbers to individuals. It then groups people who are consistently seen living together into households, with no need for a shared surname, and those groups form its household RampID (LiveRamp, RampID methodology, accessed 9 November 2026).

Household graphs make frequency capping across devices possible, and they let a TV exposure be matched to a purchase made on another device. They also raise privacy questions, because IP-based links can point to one home. Methods and accuracy differ, so buyers ask how links are made and how often they are refreshed.

Example: ID5 bought the US identity company TrueData in November 2025. Its chief executive told AdExchanger that the combined graphs recognised about 1.5 billion users across 665 million households, a company claim (PPC Land, 22 August 2026).

Related terms: RampID, ID5 ID, ACR data, identity resolution, frequency capping.

Authoritative source: LiveRamp, "RampID Methodology" documentation (accessed 9 November 2026).