Peer39 web crawler for contextual intelligence and brand safety analysis. Used in programmatic advertising to analyze website content. Does not use cookies or track individual users. Respects robots.txt directives.

At a glance

Operator: Peer39
Type: Advertising

How Centinel checks it

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

peer39_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 in the /validate response sets access_allowed to true only for a verified source that your tenant allowlists. A policy rule can allow or block this crawler by its category, Advertising.

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