There are many IP addresses that serve as reverse proxies to Cloudflare. Cloudflare is a popular content delivery network (CDN) and security service provider that offers protection and performance enhancements to websites. When a website uses Cloudflare’s services, incoming traffic is often routed through Cloudflare’s reverse proxy servers before reaching the website’s origin server. This helps protect the website from various online threats, such as DDoS attacks, and also improves performance by caching and optimizing content.
The IP addresses of Cloudflare’s reverse proxy servers are typically not publicly disclosed, as Cloudflare uses a large and constantly changing pool of IP addresses for this purpose. This provides security through obscurity and makes it more challenging for attackers to directly target and bypass Cloudflare’s protections.
If you’re trying to identify whether a specific IP address is part of Cloudflare’s reverse proxy network, you may need to use various online tools and services that can help identify Cloudflare-protected websites or IP addresses. However, please note that Cloudflare’s IP ranges can change over time, so any such identification may not be exhaustive or up to date.
Fofa.info is a website associated with FOFA (Fingerprinting Organization & Financial Analysis), a search engine and service used for cybersecurity and internet intelligence purposes. FOFA allows users to search and analyze various devices and services on the internet, helping security researchers, network administrators, and other users find specific targets, vulnerabilities, or information. The FOFA search engine can assist users in discovering devices and services exposed on the internet, thereby enhancing network security and intelligence gathering.
It’s important to note that the use of the FOFA search engine or similar tools should be conducted legally and ethically. Unauthorized network scanning or hacking activities are illegal. When using FOFA or any similar tools, it’s essential to adhere to laws and ethical guidelines and only use them within authorized and legitimate contexts.
We can search the IPs that serve as reverse proxies to Cloudflare.
IPs that sever as reverse proxies to Cloudflare in a country：server=="cloudflare" && port=="80" && header="Forbidden" && country=="CN"
remove the IPs those belong to CF：asn!="13335" && asn!="209242"
Aliyun：server=="cloudflare" && asn=="45102"
Oracle Korea：server=="cloudflare" && asn=="31898" && country=="KR"
BandwagonHost：server=="cloudflare" && asn=="25820"Download the IPs and save them to ips.txt, then test the speed to Cloudflare by CloudflareST tool.
CloudflareST -tp 443 -url https://jp.cloudflarest.link -sl 3 -tl 200 -dn 10 -f ipx.txt