Owl use data from four primary sources:

1. static geographic information from NetGeo,
2. monthly table dumps from the four RIRs (see below),
3. skitter (IP address topology) data, and
4. RouteViews BGP tables.

We will gather these three sources of data into a single database that supports lookups on IP allocation blocks, autonomous systems, assigned organizations, and geographic information.

CAIDA has arrangements for monthly bulk table transfer from the four RIRs: APNIC, ARIN, LACNIC, and RIPE. From these tables we glean the current IP, AS, and organization information, and track changes over time.

Using RouteViews BGP tables in conjunction with data from CAIDA's Macroscopic Topology Project, we will derive an IP-forward-probe based AS topology map. We will also generate an AS graph directly from Routeviews' BGP tables, which may differ from the probed topology graph for many reasons. [ 1, 2, 3, 4 ] http://www.caida.org/publications/papers/2003/ASP/ http://www.caida.org/publications/papers/2003/3rdparty/ http://www.research.att.com/~jrex/papers/sigcomm03.ps http://www.research.att.com/~jrex/papers/infocom04.pdf) We use this AS topology data to assign each AS an outdegree and ranking. The RIR data allows us to group these ASes into adminstratively responsible organizations, so that we can provide degree and ranking at the organizational granularity as well.

CAIDA's NetGeo database contains tables that map location names (city, state, or country) or US zip codes to latitude/longitude values. We will use these tables to map address components found by the NetGeo parsing code to latitude/longitude, and then we store city, state, country, latitude and longitude with the target IP address or AS in the NetGeo database. No contact data, e.g., phone or email addresses, are ever stored in the NetGeo database.

1	Traceroute and BGP AS Path Incongruities Young Hyun, Andre Broido, and k claffy Cooperative Association for Internet Data Analysis - CAIDA San Diego Supercomputer Center, University of California, San Diego
2	On Third-party Addresses in Traceroute Paths Presented at the Passive and Active Measurement Workshop in 2003 Young Hyun, Andre Broido, and kc claffy Cooperative Association for Internet Data Analysis - CAIDA San Diego Supercomputer Center, University of California, San Diego
3	Towards an Accurate AS-Level Traceroute Tool Presented at Sigcomm, 2003. Zhuoqing Morley Mao UC Berkeley   Jennifer Rexford and Jai Wang AT & T Labs-Research   Randy H. Katz UC Berkeley
4	Scalable and Accurate Identification of AS-Level Forwarding Paths Presented at IEEE INFOCOM, March 2004. Zhuoqing Morley Mao UC Berkeley   David Johnson, Jennifer Rexford, and Jai Wang AT & T Labs-Research   Randy H. Katz UC Berkeley