What is Cloudflare Radar?

Cloudflare Radar URL Scanner is a specialized bot operated by Cloudflare, designed to scan URLs for traffic, threat intelligence, and performance analytics. Part of the Cloudflare Radar ecosystem, it collects data on website availability, traffic patterns, and potential security threats. Unlike search engine crawlers, the primary goal is not indexing content for SEO but providing insights for security, marketing, and performance monitoring.

Benefits and use cases include:

  • Traffic analysis: Monitors website traffic trends to provide aggregated data on global and regional usage.
  • Threat detection: Identifies malicious URLs, spam, or suspicious behavior that may harm website security.
  • Performance monitoring: Measures response times, availability, and resource delivery across multiple regions.
  • Industry insights: Helps businesses and researchers analyze trends across domains, sectors, and regions.
  • Integration with security tools: Supports Cloudflare’s security suite by highlighting risky endpoints and potentially compromised URLs.
  • Risk mitigation: Provides early warning for attacks, DDoS activity, or unusual traffic patterns.

In short, Cloudflare Radar URL Scanner is a data-collection and analysis bot that helps organizations monitor website performance, security, and global internet trends without influencing SEO directly.

Why is Cloudflare Radar crawling my site?

Cloudflare Radar URL Scanner visits websites to collect URL-level data for traffic analysis and security monitoring. Its crawl helps Cloudflare provide insights about site availability, potential security risks, and performance metrics. It can crawl pages, scripts, and endpoints to ensure comprehensive coverage.

Potential negative impacts include:

  • Server resource consumption: Repeated scans may increase CPU or bandwidth usage, especially on smaller servers.
  • Analytics distortion: Automated requests can appear in traffic logs, inflating pageviews or affecting engagement metrics if not filtered.
  • Privacy concerns: Data collection on publicly accessible URLs may expose sensitive or restricted endpoints.
  • Security false positives: Some security rules may flag the scanner as suspicious, resulting in blocked requests or alerts.
  • No SEO benefit: The crawler does not improve search engine indexing or visibility.
  • Redundant crawling: If your site has many static pages, some requests may be unnecessary and consume resources without delivering actionable insights.

Overall, while Cloudflare Radar URL Scanner is highly beneficial for monitoring and threat intelligence, website owners may need to account for minor server and analytics considerations.

Threat research insights on Cloudflare Radar

All data in this section are produced by DataDome's Galileo Threat Research team from our proprietary detection network and reviewed by human analysts.

Verified Bot A verified bot has high identification strength
Verified
Robots.txt Compliance Whether this bot respects robots.txt directives
Respected
Identification Strength How confidently DataDome can identify this bot
High

Traffic origins

Top 15 countries by bot traffic

US US 91.16%
FR FR 2.37%
DE DE 2.16%
JP JP 1.29%
SG SG 0.65%
TW TW 0.43%
GB GB 0.43%
IT IT 0.43%
AU AU 0.43%
NL NL 0.22%
PL PL 0.22%
PK PK 0.22%

Most used autonomous system (AS)

Top 5 by traffic share

Cloudflare, Inc.
99.78%
HostRoyale Technologies Pvt Ltd
0.22%
Traffic Occupancy
<0.1%

On average, occupy <0.1% of the traffic from bots in the directory

Authorization Rate
100%

Businesses decide to authorize this bot 100% of the time

How to block Cloudflare Radar?

If you wish to limit or block Cloudflare Radar URL Scanner, several methods can be used:

  1. Robots.txt
    User-agent: Cloudflare-Radar
    Disallow: /
    

    This requests the bot to avoid crawling, but it depends on compliance.

  2. Apache .htaccess Rules
    RewriteEngine On
    RewriteCond %{HTTP_USER_AGENT} Cloudflare-Radar [NC]
    RewriteRule .* - [F,L]
    

    Blocks requests based on User-Agent.

  3. Nginx Configuration
    if ($http_user_agent ~* "Cloudflare-Radar") {
        return 403;
    }
    
  4. Firewall/WAF
    Tools like Cloudflare, AWS WAF, or Sucuri can filter traffic based on User-Agent or IP addresses, providing precise control over scans.
  5. IP Blocking
    Identify the scanner’s IP ranges from server logs and block them directly if necessary.
  6. Rate Limiting
    Limit the frequency of requests instead of blocking entirely, reducing server load while still allowing minimal monitoring.

By applying these controls, you can balance website resource usage with security monitoring, ensuring the site remains efficient while preventing unnecessary automated scans.

DataDome

See which bots and AI agents bypass your defenses

Create your account to start analyzing and mitigating malicious bots and AI-drive threats in real-time