Freely Available Dataset Requests

Data providers face a unique challenge in that requiring users to apply for data access discourages data use because some users find the application process too onerous and do not pursue data access. Yet justifying the significant resources necessary to serve data requires quantitative and demographic information about data users.

To strike a balance between these competing interests, CAIDA asks users of our public datasets to voluntarily provide any or all of their name, institution, email address, relationship to CAIDA, number of students, and intended use of the data. If users do not wish to provide this data, they can click on a a link to bypass the form and go directly to the data. Users can also submit a blank form to move on to the dataset.

Response Overview Total submissions: 635 Earliest submission: December 1, 2006 15:19:02 Latest submission: September 6, 2008 17:29:10 Names: 379 (59.68%) Institutions: 358 (56.37%) Emails: 365 (57.48%) Students Using Data: 1480 (average 2.33)	Dataset Chosen AS Relationships Dataset 289 Skitter AS Links Dataset 215 Code-Red Worms Dataset 64 Witty Worm Public Dataset 38 IPv4 Routed /24 AS Links Dataset 28
Response by Day of the Week Monday 130 Tuesday 110 Wednesday 125 Thursday 85 Friday 82 Saturday 41 Sunday 61	Who Requests Data Academic Researcher/Student 386 Other 233 Government Researcher 5 CAIDA Sponsor 5 Government Agency 2 Academic Researcher/Student, CAIDA Sponsor 1 Academic Researcher/Student, Government Researcher 1 Government Researcher, Government Agency 1

Freely Available Datasets

For more information about CAIDA's publicly available datasets, see:

Dataset Description	Release Date	Data Access Link
IPv4 Routed /24 AS Links	March 31, 2008	access data
AS Taxonomy	April 13, 2006	access data
AS Relationships	April 6, 2006	access data
Code-Red Worms	February 1, 2006	access data
Witty Worm	January 11, 2006	access data
Router Adjacencies	May 23, 2004	access data
Skitter AS Links	May 2004	access data
AS Rank	April 2, 2004	access data

Freely Available Dataset Sponsors

• National Science Foundation
• Department of Homeland Security
• Cisco Systems
• WIDE Project
• Limelight Networks
• Defense Advanced Research Projects Agency