BotDB Record

Cloudflare Custom Error Page Crawler

Review first

Cloudflare Custom Error Page Crawler is a crawler framework from Cloudflare used for Cloudflare Custom Error Page Crawler is used for Cloudflare Custom Error Page Crawler fetches customer error pages so they can be served or cached at the edge when needed; it appears in server logs as `Collapsify/`.

Crawler Error Page Caching Documented Confidence: Medium Verified: Yes robots.txt: Unknown
Operator
Cloudflare
Family
Cloudflare
Type
Crawler
Source type
Documented
Last checked
2026-06-22

User-Agent Signal

Cloudflare
Collapsify/
Verification note

User-agent strings are identification signals, not proof of identity. Confirm important allow, block, or rate-limit decisions with logs, DNS or IP evidence, request behavior, or operator documentation when available.

Robots.txt Snippet

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User-agent: Collapsify/
Disallow: /

Click the snippet to copy it, or highlight the text manually.

Handling Guidance

Depends

Use this record as bot intelligence, then verify the request source and behavior before allowing, blocking, or rate limiting.

Cloudflare Custom Error Page Crawler is used for Cloudflare Custom Error Page Crawler fetches customer error pages so they can be served or cached at the edge when needed.

Intelligence Details

BotDB fields
Operator
Cloudflare
Family
Cloudflare
Type
Crawler
Purpose
Error Page Caching
Identity type
Documented
Confidence
Medium
Last verified
2026-06-22
Last checked
2026-06-22
Source type
Documented
Verification
Verify Cloudflare Custom Error Page Crawler by matching `Collapsify/` to Cloudflare evidence, then checking reverse DNS, source-network ownership, signed request data, or published crawler documentation when available.
Spoofing risk
Cloudflare Custom Error Page Crawler has medium spoofing risk because user-agent strings can be copied; pair the match with DNS, IP, behavior, or operator evidence.

Notes

  • Cloudflare Custom Error Page Crawler is a crawler framework from Cloudflare used for Cloudflare Custom Error Page Crawler is used for Cloudflare Custom Error Page Crawler fetches customer error pages so they can be served or cached at the edge when needed.
  • Its primary user-agent pattern is Collapsify/; related patterns include Collapsify; Cloudflare Collapsify; Custom Error Page Crawler.
  • Cloudflare Custom Error Page Crawler is verified with Medium confidence. The identity type is Documented, and the evidence basis is documented crawler-pattern evidence.
  • Cloudflare Custom Error Page Crawler does not have confirmed robots.txt behavior in the available public evidence.
  • Cloudflare Custom Error Page Crawler should be reviewed against site policy, source evidence, crawl rate, and requested paths before a permanent allow or block rule is created.

Evidence and Source

  • Verify Cloudflare Custom Error Page Crawler by matching `Collapsify/` to Cloudflare evidence, then checking reverse DNS, source-network ownership, signed request data, or published crawler documentation when available.
  • Cloudflare Custom Error Page Crawler traffic is primarily detected by the `Collapsify/` user-agent pattern; related patterns include `Collapsify; Cloudflare Collapsify; Custom Error Page Crawler`. Compare source IPs, reverse DNS, request paths, and crawl cadence with Cloudflare infrastructure before trusting the traffic.
  • Cloudflare Custom Error Page Crawler is used for Cloudflare Custom Error Page Crawler fetches customer error pages so they can be served or cached at the edge when needed.
  • Cloudflare Custom Error Page Crawler has medium spoofing risk because user-agent strings can be copied; pair the match with DNS, IP, behavior, or operator evidence.

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Verified robots.txt: Unknown Block: Depends Documented
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Use in Botcrawl Edge

Botcrawl Edge

Match this signal against live requests, related datacenter traffic, and rule actions in Edge.

Open Edge Open in Edge BotDB