The current state and likely evolution of the Internet Andrew Odlyzko AT&T Labs Florham Park, NJ 07932, USA amo@research.att.com http://www.research.att.com/~amo Abstract Surprisingly little is known about the Internet. Even such basic facts as the size of the networks that make up the Internet or the amount of traffic they carry are not available. This paper presents estimates of the main statistics about the size and growth of the Internet, as well as about utilization patterns. This data is then used to justify some speculative predictions about the likely evolution of data networks.