CloudflareObservatoryCurly is a bot in the monitoring and analytics bots category, operated by Cloudflare.
Synthetic network probes for HTTP timing measurements (TCP, TLS, TTFB). Measures connection timing for customer-owned URLs.
Monitoring bots check uptime, performance and page changes on behalf of a site owner or a third party. Allow the services you run yourself and exclude them from analytics so they do not inflate page views.
CloudflareObservatoryCurly identifies itself with this user agent string:
curly-*Anyone can copy a user agent string. Transfon Security also checks where each request comes from, so a request that claims to be a known crawler but comes from the wrong network is treated as a fake, not as the real crawler.
We have not confirmed whether CloudflareObservatoryCurly follows robots.txt. Add a rule, then check your logs to see that it stopped. robots.txt is a plain text file at the root of your domain, such as https://example.com/robots.txt.
User-agent: curly Disallow: /
User-agent: curly Disallow: /private/ Disallow: /search
User-agent: curly Allow: /blog/ Disallow: /
User-agent: curly Allow: / User-agent: * Disallow: /
User-agent: curly group, CloudflareObservatoryCurly ignores your User-agent: * rules, so repeat any that should still apply.curly from CloudflareObservatoryCurly's user agent; check Cloudflare's own documentation if it publishes a different robots.txt name.Treat robots.txt as a statement of your policy, and enforce it where requests arrive.
Allow CloudflareObservatoryCurly if it is a service you use, and keep its visits out of page views and ad requests either way.
Transfon Security for publishersCloudflareObservatoryCurly is not a person. Exclude it from campaign and conversion data so reports reflect real visitors.
Transfon Security for advertisersAllow CloudflareObservatoryCurly only if it works for your store, and keep it away from cart and checkout.
Transfon Security for e-commerceIf CloudflareObservatoryCurly is a service you use, allow it on the endpoints it needs and block it elsewhere.
Transfon Security for SaaS and APIsrobots.txt is a request, not an enforcement. Transfon Security shows CloudflareObservatoryCurly by name in the Top Bots report, so you can see how often it visits and which pages it reads. Block or allow it with a User Agent rule, or slow it down with a rate limit decision rule.
Transfon Security
CloudflareObservatoryCurly is a bot in the monitoring and analytics bots category, operated by Cloudflare. Synthetic network probes for HTTP timing measurements (TCP, TLS, TTFB). Measures connection timing for customer-owned URLs.
We have not confirmed whether CloudflareObservatoryCurly follows robots.txt. Add a robots.txt rule, then check your logs to see that it stopped, and block it by user agent if it did not.
Add "User-agent: curly" followed by "Disallow: /" to the robots.txt file at the root of your site. To enforce it, block requests whose user agent contains "curly-" at your WAF. In Transfon Security that is one User Agent block rule.
No. robots.txt is voluntary, so CloudflareObservatoryCurly may not follow it, and anyone can send CloudflareObservatoryCurly's user agent, so a fake CloudflareObservatoryCurly ignores your rule. Enforce the rule where requests arrive, at your WAF, and check the source network.
Monitoring bots check uptime, performance and page changes on behalf of a site owner or a third party. Allow the services you run yourself and exclude them from analytics so they do not inflate page views.
Transfon Security identifies every bot in this directory in your traffic reports, flags fake search crawlers, and lets you allow, block or rate limit each bot.
Privacy, security, monetization, and performance insights. A few emails a month, no spam.