Archive for May, 2010

Growth trends in the AS-level Internet

Friday, May 7th, 2010 by Amogh Dhamdhere

We have studied growth trends in the number of ASes seen advertised in the global routing system from different regional registries (similar to Geoff Huston’s 32-bit AS Number Report, but with per-registry trends). We used Routeviews and RIPE BGP dumps over the last 12 years, and Team Cymru’s WHOIS lookup service to map ASNes to registries as of March 2010. To our knowledge, historical data to map an ASN to a regional registry at any given time in the past is not available, so we cannot account for ASN movement between registries. More information about the data collection and pre-processing is in our IMC 2008 paper, “Ten Years in the Evolution of the Internet Ecosystem” and our supplemental data page.