Cloudflare Health Checks

Listed only

Cloudflare's Health Checks probes, which monitor customer origin servers from Cloudflare data centers in regions the customer selects. Cloudflare documents a fixed User-Agent format embedding the first 16 characters of the health check ID, and recommends matching on it; its health-checks docs do not tie probe traffic to the published Cloudflare IP lists, so no CIDR recipe is attached.

Operated by Cloudflare · Official documentation

User agents

Patterns this directory matches, with real observed strings.

regexCloudflare-Healthchecks/[\d.]+
observedMozilla/5.0 (compatible; Cloudflare-Healthchecks/1.0; +https://www.cloudflare.com/; healthcheck-id: AAAAAAAAAAAAAAAA)

How to verify

No verification recipe published by the operator.

Good Bot Practices scorecard

Identifies honestly
Stable UA token documented (1 pattern)
Verifiable
Operator publishes no verification path
Respects robots.txt
Service traffic you configured — robots.txt does not apply
Behaves
Crawl-rate behavior is operator-declared; not machine-verifiable from this dataset
Reachable operator
Operator and documentation published

Measured against the Good Bot Practices.