Cloudflare Radar is a 📝Cloudflare product that publishes free, near-real-time data on global Internet traffic, security, performance, and standards adoption, drawn from the company's own network and its 1.1.1.1 public DNS resolver.
Radar launched in September 2020 as a public window onto the traffic patterns Cloudflare already saw across roughly a fifth of the web, then was rebuilt as Radar 2.0 in 2022 with a free API and a Data Explorer for arbitrary queries. Through 2025 and 2026 it became the reference source for measuring the agentic web, adding AI Insights and, in April 2026, a weekly Agent Readiness dataset tracking agent-standard adoption across the 200,000 most-visited domains.
It is used by journalists reporting on outages and shutdowns, network operators diagnosing regional degradation, security teams tracking attack trends, and researchers who need citable Internet measurements. Everything is free and requires no account.
Radar is in the library because it is the closest thing the open web has to a shared instrument panel — the place where a claim about Internet-wide behavior can be checked rather than asserted. When we make a claim about how AI crawlers behave, this is where the number should come from.
Key Features
- Traffic trends — Country, region, and ASN-level views of HTTP and DNS traffic volume, protocol mix, device and browser share, plus the routing shifts behind them, updated continuously.
- Security and attack data — Layer 3 and Layer 7 DDoS attack trends, bot and automated traffic share, TLS and post-quantum adoption rates, and observed vulnerability exploitation.
- Internet quality — Bandwidth, latency, jitter, and packet loss measured by Cloudflare Speed Test, alongside a public log of outages annotated with cause, scope, and duration.
- AI Insights — Crawl and referral traffic by AI platform, model-provider popularity, 📝robots.txt policy trends, and the weekly Agent Readiness dataset over 200,000 domains.
- 📝Radar Researcher — Plain-language querying of every Radar dataset, returning interactive charts with a visible reasoning trail instead of a hand-built API call.
Getting Started
- Open radar.cloudflare.com — no account, sign-up, or API key is required to browse.
- Pick a section from the top navigation: Traffic, Security, Performance, Domains, or AI.
- Set the scope with the location and date-range selectors that sit above any chart.
- Click Researcher in the header to ask for the same data in plain language instead.
- Pull the numbers programmatically via the free Radar API or the Data Explorer.
Related
- 📝Cloudflare Agent Readiness — the scoring system behind Radar's weekly agent-standards dataset.
- 📝Agent Readiness Checklist — what each of those tracked standards actually requires of a site.