---
updatedAt: 2025-08-28T17:16:46.000Z
agentTools:
  projectIndex: https://docs.scope3.com/llms.txt
---

# Configuring ads.txt for geo and channel

Scope3 parses ads.txt files to determine which rows apply to which geos and channels.

### Determining countries and channels for a property

As most properties do not have meaningful traffic for every channel and country, we use traffic data from various sources to determine the most common geo-channel combinations to model. Please contact us if you would like to see additional geo-channel breakouts for particular properties!

### Using ads.txt comments for hints

As of the ads.txt specification (1.2), there is no standardized way to signal that a particular row applies only to a particular geography or channel. It is common practice for publishers to indicate this using a comment: a hash (`#`) followed by a hint in all capital letters. For instance, `#US`. Scope3 only interprets hints that are separated from each other by a space and consist of all capital letters.

### Geo hints

Scope3 supports the following hints. Where a hint represents a region instead of a country, the countries we consider to be in the region are listed below.

| Hint      | Country | Region |
| :-------- | :------ | :----- |
| # US      | US      |        |
| # GERMANY | DE      |        |
| # UK      | GB      |        |
| # BRAZIL  | BR      |        |

### Regions

| Region | Countries included |
| :----- | :----------------- |
| LATAM  | MX,                |
| ANZ    | AU, NZ             |
| EMEA   |                    |
| APAC   |                    |

### Channel hints

We support a variety of channel hints. Note that we do not currently have a mechanism to distinguish an outstream placement from a standard banner placement. We plan to work with publishers and industry groups to support the Global Placement ID (GPID) in an upcoming release.

| Hint                       | Channel                |
| :------------------------- | :--------------------- |
| # INSTREAM, #INSTREAMVIDEO | `web`,`app`,`ctv/bvod` |
| # DISPLAY, #BANNER         | `web`,`app`            |
| # NATIVE                   | `web`,`app`            |
| # AUDIO                    | `digital-audio`        |