Skip to Content
[CAIDA - Center for Applied Internet Data Analysis logo]
Center for Applied Internet Data Analysis
www.caida.org > data : about : restricted
Data Sharing for Restricted CAIDA Datasets
CAIDA provides access to several categories of restricted datasets: macroscopic topology measurements (e.g. the IPv4 Routed /24 Topology Dataset, anonymized internet traces (e.g. the Anonymized Internet Traces 2013 Dataset, a DDoS Attack in 2007, the DNS root/gTLD RTT Dataset, and several datasets from the UCSD Network Telescope, including backscatter datasets (e.g. The Backscatter-2008 Dataset). For a full list see our Data Overview.

The first graph provides a view of user interest for the main categories of restricted dataset provide by CAIDA. For each year two columns show the total number of requests received (left column) and the total number of requests approved (right column).

The second graph shows the TLD distribution, extracted from the email addresses of our users, to get an overview of the type of user of CAIDA data (e.g., educational, commercial, government, etc.) and, from country-level TLDs, the geographic distribution of our users. The graph shows the most popular TLDs over the years.

The table below shows the number of requests for all restricted datasets combined approved by CAIDA since 2002. This typically is about 75% to 80% of the requests received. CAIDA has been tracking this information in detail since about 2008. Earlier numbers have been reconstructed from email archives and are only estimates.

Request Statistics by data category

Last update: 2019-Jul-15 08:18:04 UTC

TotalJanFebMarAprMayJunJulAugSepOctNovDec
20191673415262836226
2018370402843383720302125333322
2017445443965443032332227453925
2016675525763616063553846566856
2015597514067535046553668445136
2014601513548496050593552476253
2013615515665494143444239646655
2012525374234515243473641386044
2011478265547454541423441274332
2010426252770394634271839363530
2009361121932391932452142314227
2008296193925281630271915252528
200718711152219241414146161913
20061791017269227141914131810
20051711191919141610109251910
200496539951078612148
200375359398564977
200211000010022330

The breakup of these requests for each main category of restricted data is given in these separate tables.

Geographical Distribution of Users of Restricted Data

Last updated on 2019-Jul-15 08:29:42 UTC

eduUS Educational1412nlNetherlands21ltLithuania4
cnChina875mxMexico19npNepal4
inIndia295ieIreland18siSlovenia4
ukUnited Kingdom260huHungary16qaQatar3
comCommercial (.com)214fiFinland16bdBangladesh3
krKorea (South)163saSaudi Arabia15catCatalonia (Spain)3
deGermany140nzNew Zealand15usUnited States3
brBrazil133czCzech Republic14cyCyprus3
caCanada127euEuropean Union13ecEcuador2
jpJapan114thThailand12eusBasque language2
itItaly109dkDenmark12lvLatvia2
frFrance96noNorway12uaUkraine2
twTaiwan77arArgentina11omOman2
auAustralia70ruRussia10kwKuwait2
orgNon-Profit Organization67ngNigeria10meMontenegro2
myMalaysia60joJordan10etEthiopia2
esSpain60zaSouth Africa9bgBulgaria2
ilIsrael54maMorocco8uyUruguay2
plPoland47rsSerbia8suUSSR (former)2
hkHong Kong46atAustria7lkSri Lanka2
govUS Government43tnTunisia6bfBurkina Faso1
grGreece41psPalestine6institute1
trTurkey41luLuxembourg6ioBritish Indian Ocean Territory1
chSwitzerland37phPhilippines5baBosnia and Herzegovina1
milUS Military37aeUnited Arab Emirates5eeEstonia1
ptPortugal37clChile5bhBahrain1
pkPakistan34hrCroatia (Hrvatska)5crCosta Rica1
sgSingapore30roRomania5mtMalta1
seSweden29lbLebanon5snSenegal1
idIndonesia26skSlovak Republic5byBelarus1
beBelgium24egEgypt4tu-dar1
netNetwork (.net)23mmMyanmar (Burma)4ugUganda1
coColombia23dzAlgeria4keKenya1
vnViet Nam22iqIraq4pePeru1

  Last Modified: Mon Jul-15-2019 01:37:31 PDT
  Page URL: http://www.caida.org/data/about/restricted/index.xml