Hi There, It is common to find websites/tools on the internet which performs speed test, loading third party images, load external JavaScript files etc. to be vulnerable to Server Side Request Forgery. I've found a couple of them, reported but some of them did not take it seriously. I've recently ran into KeyCDN tools website , a site owned and operated by KeyCDN , a CDN company and reported to be one of the best solution according to the TechRadar info . After looking at some functionalities presented on the web site I've found a few SSRF conditions. Here it goes: 1) Using the Trace Route utility to discovery some Internal IP Address When I used the Trace Route functionality there was an internal IP address 10.0.10.1 (which seems no longer there) belonging to the Frankfurt POP. 2) Using the Ping utility to confirm the above finding (and maybe Brute Force some hosts?) I will discuss the FQDN you are seeing there soon! 3) Using the Performance Test utility