How does CTV advertising use IP addresses for targeting?

Content on WhatAnswers is provided "as is" for informational purposes. While we strive for accuracy, we make no guarantees. Content is AI-assisted and should not be used as professional advice.

Last updated: April 8, 2026

Quick Answer: CTV advertising uses IP addresses to target households by matching them with demographic and behavioral data from third-party providers, enabling precise ad delivery to specific audiences. For example, in 2023, IP-based targeting accounted for approximately 40% of CTV ad spend in the U.S., according to eMarketer. This method allows advertisers to reach cord-cutters and streamers who may not be trackable via traditional TV methods, with platforms like Roku and Amazon Fire TV leveraging IP data since the early 2020s to enhance ad relevance.

Key Facts

CTV advertising uses IP addresses to identify households for targeting, often through data partnerships with providers like Experian or Acxiom.
In 2023, IP-based targeting represented about 40% of CTV ad spend in the U.S., as reported by eMarketer.
This method enables targeting based on demographics, interests, and viewing habits, with accuracy rates estimated at 70-80% for household-level matching.
Major CTV platforms, such as Roku and Amazon Fire TV, began integrating IP targeting capabilities around 2020-2021 to improve ad personalization.
IP addresses help bridge the gap between traditional TV and digital advertising, allowing for cross-device targeting and measurement in CTV campaigns.

Overview

Connected TV (CTV) advertising refers to the delivery of video ads through internet-connected television devices, such as smart TVs, streaming sticks (e.g., Roku, Amazon Fire TV), and gaming consoles, which has grown rapidly since the late 2010s. Unlike traditional linear TV, CTV offers digital-like targeting capabilities, with IP addresses playing a key role in this evolution. Historically, TV advertising relied on broad demographic data from Nielsen ratings, but with the rise of streaming services like Netflix and Hulu, advertisers sought more precise methods. By the early 2020s, CTV ad spending in the U.S. surpassed $20 billion annually, driven by increased cord-cutting and adoption of over-the-top (OTT) platforms. IP addresses became a critical tool for targeting because they provide a stable identifier for households, enabling advertisers to leverage third-party data to infer characteristics like income, family size, and interests, thus transforming CTV into a hybrid of TV and digital advertising.

How It Works

CTV advertising uses IP addresses for targeting through a multi-step process that involves data collection, matching, and ad delivery. First, when a CTV device connects to the internet, it is assigned an IP address by the internet service provider (ISP), which serves as a unique identifier for the household network. Advertisers and ad tech platforms then partner with data providers, such as Experian or LiveRamp, to enrich these IP addresses with demographic and behavioral information—for instance, matching IPs to census data or purchase histories. This data is aggregated and anonymized to protect privacy, often using probabilistic models that estimate household attributes with 70-80% accuracy. During ad auctions, advertisers can target specific IP segments, such as households in a certain income bracket or with interests in sports, and ads are served programmatically in real-time. Additionally, IP addresses enable cross-device targeting, allowing ads to be synchronized across CTV, mobile, and desktop within the same household, and facilitate measurement by tracking ad exposure and conversions through IP-based attribution models.

Why It Matters

IP-based targeting in CTV advertising matters because it enhances ad relevance and efficiency, leading to higher engagement and return on investment for advertisers. By using IP addresses to deliver personalized ads, brands can reach specific audiences more effectively than with traditional TV, reducing waste and improving campaign performance—studies show CTV ads with IP targeting can achieve up to 30% higher click-through rates. This method also bridges the gap between linear and digital media, enabling omnichannel strategies that track user journeys across devices, which is crucial in an era where over 80% of U.S. households use streaming services. For consumers, it can mean more relevant ads, though it raises privacy concerns, prompting industry moves toward solutions like hashed IPs or contextual targeting. Overall, IP targeting drives the growth of CTV as a $25+ billion market by 2024, making it a key technology for modern advertising.