Overview
Cloudflare CSUP is a diagnostics from Cloudflare used for Cloudflare CSUP is used by Cloudflare customer support for diagnostic investigations of customer websites.
Its primary user-agent pattern is cloudflare-csup; related patterns include Cloudflare customer support diagnostics; Cloudflare CSUP.
Cloudflare CSUP is Unverified at the identity-evidence level. The listed identity remains useful for detection, but this record does not currently contain authoritative evidence sufficient to authenticate the identity claim.
Robots.txt behavior is not currently confirmed.
Cloudflare CSUP should be reviewed against site policy, source evidence, crawl rate, and requested paths before a permanent allow or block rule is created.
Identity
- User-Agent Pattern
-
cloudflare-csup - Aliases
- Cloudflare customer support diagnostics; Cloudflare CSUP
- HTTP Agent Examples
-
cloudflare-csup - Robots Token
- cloudflare-csup
- Identity Type
- Observed
- Evidence Method
- Treat `cloudflare-csup` as an identity signal only. Confirm it with current operator documentation, cryptographic verification, forward-confirmed reverse DNS, source-network ownership, or other authoritative evidence before trusting the claimed identity.
Classification
- Type
- Diagnostics
- Kind
- Diagnostics
- Family
- Cloudflare
- Purpose
- Support diagnostics
Behavior and handling
- Common Use
- Cloudflare CSUP is used for Cloudflare CSUP is used by Cloudflare customer support for diagnostic investigations of customer websites.
- Detection Notes
- Cloudflare CSUP traffic is primarily detected by the `cloudflare-csup` user-agent pattern; related patterns include `Cloudflare customer support diagnostics; Cloudflare CSUP`. Compare source IPs, reverse DNS, request paths, and crawl cadence with Cloudflare infrastructure before trusting the traffic.
- Respects robots.txt
- Unknown
- Spoofing Risk
- Cloudflare CSUP has medium spoofing risk because the user-agent can be copied, even when the bot has strong source or documentation support.
- Risk
- Neutral
- Recommended Handling
- Depends
Rules and controls
- Robots.txt Snippet
-
# robots.txt behavior is unconfirmed. Do not rely on this rule without verification.
Relationships
- Operator
- Cloudflare Checked 2026-08-07
Relationships without an Evidence link are normalized from the canonical directory record. They should not be interpreted as independent proof of physical presence or request origin.