What

This tool finds and locates points of presence of CDNs only using a single machine.

Source Code

How

It leverages EDNS0 options to force DNS servers to give away all possible server client mappings.

Currently support

• Google
• Amazon Cloudfront
• maxCDN
• Edgecast

Demo

• Google PoPs using 20% public IPs.

• Amazon Cloudfront using 25% public IPs.

Here is the locations of Cloudfront PoPs (lower) compared with the map from cdnplanet (upper).