# AdSpirit ads.txt Crawler

> Ads.txt crawler operated by AdSpirit GmbH, a German ad server company. It reads the /ads.txt file of publisher domains to confirm authorised seller entries.

Source: https://docs.centinelanalytica.com/crawlers/adspirit-ads-txt-crawler

## At a glance

- Operator: [AdSpirit GmbH](https://www.adspirit.de)
- Type: Advertising

## How Centinel checks it

- **User agent**: The request calls itself this crawler. Anyone can send the same string.

AdSpirit ads.txt Crawler publishes nothing Centinel can check a source against, so a match reports the name and leaves the source unconfirmed. The match tokens, verification domains, and address feeds are not published here.

## Allowing or blocking it

The [crawler object](https://docs.centinelanalytica.com/api/crawlers.md) in the `/validate` response sets `access_allowed` to `true` only for a verified source that your tenant allowlists. A [policy rule](https://docs.centinelanalytica.com/admin/policy.md) can allow or block this crawler by its category, `Advertising`.

[Back to the crawler catalog](https://docs.centinelanalytica.com/concepts/crawler-catalog.md)

[Crawlers with a source check](https://docs.centinelanalytica.com/crawlers.md)