Advertising - Ads.txt

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1 - About

Ads.txt is a text file hosted at the root of a website that identify the ad network that are authorized to sell the website inventory.

ads.txt has similar functionality than robots.txt but for ads,

The data required to populate the file comes from the OpenRTB protocol

Advertising

3 - Relationship

The following relationship may be defined:

  • Domain owners who sell on exchanges through their own accounts
  • Networks and auction houses who programmatically sell on behalf of domain owners
  • Content syndication partnerships where multiple authorized sellers represent the same inventory

4 - Format

Columns by order:

5 - Example

extract from https://gerardnico.com/ads.txt

ads.txt
Google.com, pub-5995202563537249, RESELLER, f08c47fec0942fa0 #comments
districtm.io, 100604, DIRECT

where for the first line:

Advertising

6 - Management

https://www.adstxtmanager.com/ - this is a website from ezoic but it gives a great insight.

7 - Documentation