The claimed subject matter provides systems and/or methods that uncovers detailed differences in the performance of different Internet Service Provider ISP) networks. The system can include components, devices, and/or processes that utilize a list of target Internet Service Provider (ISP) networks to create a list of Internet Protocol (IP) addresses to interrogate, distribute the list of addresses to measurement nodes and obtains in return probing results from the measurement nodes, the probing results employed thereafter to provide comparative performance metrics associated with the target Internet Service Provider (ISP) networks.