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 significant resources are required to collect, curate, document, and serve scientific datasets to the research community.

To encourage support for data collection activities while not prohibiting access for users without resources, CAIDA provides access registered academic, government, and non-profit researchers and CAIDA members. We ask for-profit companies to sponsor CAIDA in order to gain access to these restricted datasets. All data access is subject to Acceptable Use Policies (AUP) designed to protect the privacy of monitored communications, ensure security of network infrastructure, and comply with the terms of our agreements with data providers.

Data Request Overview

Total submissions:	1779
Earliest submission:	February 4, 2003 13:25:51
Most recent submission:	July 3, 2008 20:51:58
Students Using Data:	2068 (average 1.16)
Dataset Chosen	Anonymized Internet Traces 413 Macroscopic Topology Datasets 389 Backscatter Datasets 295 AS Relationships Dataset 251 Skitter AS Links Dataset 209 Witty Worm Dataset 81 Code-Red Worms Dataset 61 Witty Worm Public Dataset 38 DNS root/gTLD RTT Dataset 24 IPv4 Routed /24 AS Links Dataset 17

Requests for Freely Available Data

Response Overview Total submissions: 577 Earliest submission: December 1, 2006 15:19:02 Latest submission: July 2, 2008 20:03:59 Names: 354 (61.35%) Institutions: 334 (57.88%) Emails: 339 (58.75%) Students Using Data: 1310 (average 2.27)	Dataset Chosen AS Relationships Dataset 251 Skitter AS Links Dataset 209 Code-Red Worms Dataset 61 Witty Worm Public Dataset 38 IPv4 Routed /24 AS Links Dataset 17
Response by Day of the Week Monday 120 Tuesday 103 Wednesday 116 Thursday 75 Friday 69 Saturday 34 Sunday 59	Who Requests Data Academic Researcher/Student 348 Other 213 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

Requests for Restricted Access Data

Response Overview Total submissions: 1202 Earliest submission: February 4, 2003 13:25:51 Latest submission: July 3, 2008 20:51:58 Students Using Data: 758 (average 0.63)

Dataset Chosen Anonymized Internet Traces 413 Macroscopic Topology Datasets 389 Backscatter Datasets 295 Witty Worm Dataset 81 DNS root/gTLD RTT Dataset 24

Response by Day of the Week Monday 196 Tuesday 245 Wednesday 241 Thursday 207 Friday 136 Saturday 77 Sunday 100

Who Requests Data Academic Researcher/Student 976 Other 173 Government Researcher 20 Government Agency 11 CAIDA Sponsor 10 Academic Researcher/Student, CAIDA Sponsor, Government Researcher, Government Agency 4 Academic Researcher/Student, Government Researcher 3 Academic Researcher/Student, CAIDA Sponsor 3 Academic Researcher/Student, CAIDA Sponsor, Government Agency 1 Academic Researcher/Student, Government Agency 1

More Information

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

Restricted Access Datasets

For more information about CAIDA's restricted access datasets, see:

Dataset Description	Release Date	Dataset Request Link	Dataset Access Link (requires login)
IPv4 Routed /24 Topology Dataset	February 1, 2008	request access	data access
Anonymized 2007 Internet Traces	January 17, 2008	request access	data access
Backscatter 2007 Dataset	June 26, 2007	request access	data access
DNS root/gTLD RTT Dataset	August 3, 2006	request access	data access
Backscatter 2006 Dataset	April 7, 2006	request access	data access
Backscatter 2004-2005 Dataset	February 15, 2006	request access	data access
Witty Worm Dataset	January 11, 2006	request access	data access
Backscatter TOCS Dataset	November 9, 2005	request access	data access
Skitter Topology Data	July 29, 2004	request access	data access
Internet Topology Data Kit (ITDK 2002-2003)	July 29, 2004	request access	data access
Anonymized OC48 Traces	February 9, 2004	request access	data access

Sponsors

• National Science Foundation
• Department of Homeland Security
• Cisco Systems
• WIDE Project
• Limelight Networks
• Defense Advanced Research Projects Agency
• Digital Envoy
• Endace
• University of Auckland
• WAND - University of Waikato