Network Tools

Our Network Tools allow you to gain insight in your connection and the resulting behaviour of CDNs.

Addresses

CDNs need to redirect you to their closest point-of-presence (POP). To do this they often use DNS to map a domain name to the address of the POP. Unfortunately, the CDN has no way of telling where you are exactly. This is because the DNS query is performed by your ISP's DNS resolver, which may in a very different location than you. In the table below we show what DNS resolver you are using and what your actual external address is.