---
title: Pixalate Releases 2017 Ads.txt Trends Report
description: How many publishers are using the IAB's ads.txt, and which exchanges are used most often? Pixalate's 2017 Ads.txt Trends Report provides a comprehensive update.
---

[Pixalate Blog ](https://www.pixalate.com/blog)

# [Pixalate Releases 2017 Ads.txt Trends Report](https://www.pixalate.com/blog/iab-ads-txt-2017-trends-report)

 Written by [Tyler Loechner](https://www.pixalate.com/blog/author/tyler-loechner) | Dec 21, 2017 4:02:17 PM

Pixalate this week released its [2017 Ads.txt Trends Report](https://info.pixalate.com/ads-txt-2017-trends-report). The report features data and insights collected by Pixalate detailing the year-end state of ads.txt adoption. 

The industry-wide ads.txt effort was born in the IAB's Tech Lab and has created overnight transparency for buyers into the programmatic advertising ecosystem of sellers and domains.

### The rise of ads.txt

Since September, Pixalate has been detailing ads.txt adoption on a weekly basis via its [blog](https://blog.pixalate.com/iab-ads-txt-adoption-data-publishers-list) and has made available for download a list containing all [publishers who have an ads.txt file](https://info.pixalate.com/publishers-with-ads-dot-txt), as observed by Pixalate, which is updated weekly.

The 2017 Ads.txt Trends Report compiles this months-long research into a concise report detailing the rise of ads.txt over the final months of 2017 — and where it stands as the year ends.

### Inside the report, you'll find...

- Ads.txt adoption trends from **September-December 2017**
- Insight into the **Alexa Top 1000 and Top 5000** sites and their ads.txt adoption rates on a week-by-week basis 
    - Insight into the Pixalate Top 1000 and Top 5000 sites — which only contain sites which **support programmatic advertising** — and their ads.txt adoption rates on a week-by-week basis
- Data on which **exchanges show up most often on ads.txt files** 
    - Includes data on which exchanges are listed most often as a **direct partner, as a reseller, and a combination of both**
- And much more

### Report highlights:

- According to Pixalate's data, on September 18, 2017, the total number of sites with an ads.txt file was **3,523** 
    - That number rose to **71,288** by December 18, 2017, representing a rise of **1,924%**
- Of the top 1000 sites which support programmatic, ads.txt adoption **increased from about 16% in September to about 56%** in December
- Of the 71,288 domains which have an ads.txt file, **Google is found on 96.6%** of them
- **Google** is the exchange most often listed as a "direct" partner on ads.txt files, while **AppNexus** is the exchange most often listed as a "reseller" on ads.txt files, according to Pixalate's data

*Want more data-driven insights? Sign up for our blog! *

[View full post](https://www.pixalate.com/blog/iab-ads-txt-2017-trends-report)

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