Trusted

Owned and operated by Ghostery since 2018. We've empowered millions of users to take control of their online experience and protect their personal information from data collectors.

Dynamic

Actively monitors the data collectors on the top 10,000 most visited websites worldwide. Whotracks.me shows type, reach, and affiliation of every tracker.

Open Source

Shared with the wider content-filtering community. Other projects can use our tracker database to enhance their own privacy tools.

Discerning

More than just a website — WhoTracks.me analyzes data from the top 10,000 websites worldwide and informs Ghostery’s Anti-Tracking technology.

AppNexus

http://www.appnexus.com/

24 /848

Very prevalent

adnxs-simple.com

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TRACKER REACH

3.1%

of web traffic is tracked by AppNexus

2666

of the top 10,000 sites seen loading the AppNexus tracker

Data from May 2017 to March 2024.

SEEN ON THESE TYPES OF WEBSITES

33%

Uncategorized

20%

News and Portals

19%

Entertainment

11%

Business

6%

Reference

TRACKING TYPE

COOKIES are files placed by the website, stored in the browser that is used to identify you to the website.

TRACKER CATEGORY

Advertising

Provides advertising or advertising-related services such as data collection, behavioral analysis or retargeting.

Learn about our tracker categories

What is a tracker?

SIMILAR TRACKERS

DoubleClick Google
Google Google
Facebook Meta
Amazon Advertising Amazon

Presence on top sites