Cloudflare IP Lookup
ASN: AS13335 · United States · Cloud / Data Center Provider
Cloudflare operates AS13335 from 330+ data center locations worldwide; its anycast routing means Cloudflare IPs (including 1.1.1.1 DNS) appear to originate from the nearest PoP, making traditional geolocation inaccurate.
Look Up a Cloudflare IPCloudflare Network Details
United States
Cloud / Data Center Provider
Global (330+ cities)
How ISP IP Ranges Work
Cloudflare receives IP address blocks from its regional internet registry and announces them to the global internet via BGP (Border Gateway Protocol) under AS13335. These blocks are subdivided and assigned to customers, infrastructure, and data centers across Global (330+ cities).
When you enter a Cloudflare IP in our lookup tool, we query the MaxMind GeoLite2 ASN database to identify the Autonomous System and return the associated network registration data — including the geographic location of the IP block and the registered organization name.
Browse Other ISP Lookups
Frequently Asked Questions
What ASN does Cloudflare use?
Cloudflare operates the following Autonomous System Numbers (ASNs): AS13335. Cloudflare operates AS13335 from 330+ data center locations worldwide; its anycast routing means Cloudflare IPs (including 1.1.1.1 DNS) appear to originate from the nearest PoP, making traditional geolocation inaccurate. Use our IP lookup tool to identify which specific ASN a Cloudflare IP belongs to.
What IP addresses does Cloudflare use?
Cloudflare holds multiple IP address blocks allocated by its regional internet registry. These blocks are announced via BGP under AS13335. You can identify Cloudflare IP addresses using our IP lookup tool — enter any IP and check if the ISP/ASN fields show Cloudflare.
How do I check if an IP belongs to Cloudflare?
Enter the IP address in our IP Lookup tool. The ISP and ASN fields will show whether the IP is registered to Cloudflare (look for AS13335). You can also use our WHOIS Lookup to query the IP's network registration directly from the RIR database.
Where does Cloudflare operate?
Cloudflare provides internet services in: Global (330+ cities). As a cloud/CDN provider, Cloudflare uses anycast routing meaning its IPs appear to originate from the nearest data center to the user.
Does Cloudflare use VPN or proxy servers?
Cloudflare is a cloud/data center provider. Its IP ranges are routinely flagged as 'data center' or 'hosting' by IP reputation services. Many VPN providers, proxies, and automated bots use Cloudflare infrastructure, so these IPs are often scored as high-risk by fraud detection systems.
Related Tools & Resources
Enter any IP to check its ISP, location, and network details.
Query WHOIS for Cloudflare IP block ownership and ASN registration.
Check if an IP is flagged as VPN, proxy, or data center.
See your current ISP, ASN, and IP address details.
ASN: AS7922 — United States
ASN: AS7018 — United States