Overview

Ads.txt is an IAB initiative created to provide transparency in our programmatic advertising ecosystem.

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This article explains how to create an ads.txt file for publishers using District M demand.

Ads.txt Record Information

Ads.txt is a fairly straight forward implementation, containing four plain text records, each comma separated.

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districtm.io, 123456, DIRECT, 3fd707be9c4527c3
appnexus.com, 1908, RESELLER, f5ab79cb980f11d1
google.com, pub-5555555555555555, RESELLER, f08c47fec0942fa0

Obtaining Ads.txt Records

Ads.txt entries may be generated from the B3 platform by clicking the gear and selecting ads.txt:

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From here the district m ads.txt entries for your account will be listed and available to copy and paste into your ads.txt file.

Hosting ads.txt (Access Method)

Publishers implementing District M ads.txt information should adhere to the IAB ads.txt specification section 3.1 ACCESS METHODS.

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Refer to the IAB ads.txt specification to confirm you are following the specification, if you have any questions or would like District M to validate your implementation please reach out to your account manager.

Ads.txt for Mobile Applications

Ads.txt for Mobile Applications is currently awaiting app store support from the major platforms (Apple iTunes and Google Play Store) before this may be published.

Related articles and Further Reading

• IAB - ADS.TXT – AUTHORIZED DIGITAL SELLERS
• IAB - HOW TO ADS.TXT
• IAB Tech Lab - Ads.txt Specification Version 1.0
• Digiday - WTF is ads.txt?
• AdExchanger - Domain Spoofing Be Gone: Ads.Txt Will Filter Out Imposter Sites

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