Collapsify is a Cloudflare internal service that crawls customer error pages to serve them directly from Cloudflare's edge network. This improves performance by caching and delivering error pages from edge locations rather than origin servers.

At a glance

Operator: Cloudflare
Type: Feed Reader

How Centinel checks it

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

Collapsify 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, Feed Reader.

Back to the crawler catalog