Chapter 12, section 4 of the book '>Network programming in .NET' (Buy at Amazon UK) (Buy at Amazon US) demonstrates how to query different types of WHOIS servers, and how to interpret the returned data, which differs depending on the implementation of the WHOIS server.

whois.alabanza.com Alabanza, Inc C=US whois.compuserve.com CompuServe Interactive Services, Inc C=US whois.discount-domain.com interQ Inc. C=JP dns411.com Name.Space C=US whois.domaindiscover.com TierraNet, Inc. C=US whois.domainpeople.com NetNation Communications Inc. C=CA whois.easyspace.com EasySpace Ltd. C=GB whois.enom.com eNom, Inc. C=US whois.geektools.com CenterGate Research Group, LLC C=US whois.ibm.com IBM C=US whois.internetnamesww.com Melbourne IT C=AU whois.names4ever.com A+Net Registrar C=US whois.namesecure.com Maaznet Directory Service Inc. C=US whois.networksolutions.com Network Solutions, Inc. C=US whois.pacbell.com Pacific Bell C=US whois.register.com Forman Interactive Corp C=US whois.registrars.com Internet Domain Registrars C=US whois.sunquest.com Sunquest Information Systems C=US whois.berkeley.edu University of California at Berkeley C=US www.binghamton.edu State University of New York at Binghamton C=US finger.caltech.edu California Institute of Technology C=US csufresno.edu California State University - Fresno C=US csuhayward.edu California State University - Hayward C=US csus.edu California State University - Sacramento C=US whois.cwru.edu Case Western Reserve University C=US cc.fsu.edu Florida State University C=US directory.gatech.edu Georgia Institute of Technology C=US gettysburg.edu Gettysburg College C=US gmu.edu George Mason University C=US whois.dfci.harvard.edu Dana-Farber Cancer Institute C=US hmc.edu Harvey Mudd College C=US indiana.edu Indiana University C=US nii.isi.edu US Domain Registry C=US whois.isi.edu .INT Whois Service C=US whois.messiah.edu Messiah College C=US whois.rsmas.miami.edu University of Miami, Rosentiel School of Marine and Atmospheric Sciences C=US mit.edu Massachusetts Institute of Technology C=US directory.msstate.edu Mississippi State University C=US vax2.winona.msus.edu Minnesota State University - Winona C=US info.nau.edu Northern Arizona University C=US whois.ncsu.edu North Carolina State University C=US nd.edu University of Notre Dame C=US earth.njit.edu New Jersey Institute of Technology C=US vm1.nodak.edu North Dakota State University C=US austin.onu.edu Ohio Northern University C=US ph.orst.edu Oregon State University C=US osu.edu Ohio State University C=US whois.oxy.edu Occidental College C=US info.psu.edu Pennsylvania State University C=US whois.cc.rochester.edu University of Rochester C=US whitepages.rutgers.edu Rutgers University C=US whois.sdsu.edu San Diego State University C=US stanford.edu Stanford University C=US camis.stanford.edu Stanford University C=US stjohns.edu St. John's University C=US sunysb.edu State University of New York, Stony Brook C=US whois.bcm.tmc.edu Baylor College of Medicine C=US whois.ubalt.edu University of Baltimore C=US directory.ucdavis.edu University of California at Davis C=US uchicago.edu University of Chicago C=US ucsd.edu University of California at San Diego C=US weber.ucsd.edu University of California at San Diego, Division of Social Sciences C=US cgl.ucsf.edu University of California at San Francisco, School of Pharmacy C=US whois.uh.edu University of Houston C=US whois.umass.edu University of Massachusetts at Amherst C=US lookup.umd.edu University of Maryland C=US umn.edu University of Minnesota C=US ns.unl.edu University of Nebraska at Lincoln C=US whois.upenn.edu University of Pennsylvania C=US x500.utexas.edu University of Texas at Austin C=US netlib2.cs.utk.edu na-net (linear algebra on computers) C=US whois.virginia.edu University of Virginia C=US whois.wfu.edu Wake Forest University C=US wisc.edu University of Wisconsin C=US wpi.wpi.edu Worcester Polytechnic Institute C=US ibc.wustl.edu Washington University C=US vm1.hqadmin.doe.gov U.S. Department of Energy Headquarters C=US wp.doe.gov U.S. Department of Energy C=US llnl.gov Lawrence Livermore National Laboratory C=US x500.arc.nasa.gov NASA Ames Research Center C=US x500.gsfc.nasa.gov NASA Goddard Space Flight Center C=US whois.hq.nasa.gov NASA Headquarters C=US x500.ivv.nasa.gov NASA Software Independent Verification & Validation Facility C=US whois.jpl.nasa.gov NASA Jet Propulsion Laboratory C=US x500.jsc.nasa.gov NASA Johnson Space Center C=US larc.nasa.gov NASA Langley Research Center C=US whois.larc.nasa.gov NASA Langley Research Center C=US x500.msfc.nasa.gov NASA Marshall Space Flight Center C=US x500.ssc.nasa.gov NASA Stennis Space Center C=US x500.wstf.nasa.gov NASA White Sands Test Facility C=US x500.nasa.gov National Aeronautics and Space Administration C=US wp.nersc.gov National Energy Research Supercomputer Center C=US whois.nic.gov Center for Email Technology C=US seda.sandia.gov Sandia National Laboratories C=US whois.nic.mil DoD Network Information Center C=US whois.nrl.navy.mil Naval Research Laboratory C=US whois.6bone.net 6bone Registry C=US whois.abuse.net Network Abuse Clearinghouse C=US whois.aco.net Austrian Academic Computer Network C=AT whois.apnic.net Asia Pacific Network Information Center C=SC whois.arin.net American Registry for Internet Numbers C=US whois.aunic.net The .AU Registry C=AU whois.awregistry.net All West Communications C=US whois.cary.net CARYNET & HK eDNS Whois server C=HK whois.corenic.net CORE Internet Council of Registrars C=CH whois.crsnic.net Network Solutions, Inc. for Shared Registration System C=US whois.cw.net Cable & Wireless USA C=US wp.es.net Energy Sciences Network C=US whois.hinet.net Chunghwa Telecom C=TW ds.internic.net Network Solutions, Inc. (non-MILNET/non-POC)C=US whois.internic.net Network Solutions, Inc. C=US whois.ja.net JANET C=GB whois.krnic.net Korea Network Information Center C=KR whois.lac.net Latin America & Caribbean Whois Server C=EC companies.mci.net RFC 2345 TLD-WHOIS demonstration server C=US whois.nameit.net nameIT C=US whois.netnames.net NetNames (.AF, .BT, .PW, .TM) C=GB whois.nomination.net NomiNation (.GB.COM, .GB.NET, .UK.COM, .UK.NET) C=GB whois.nsiregistry.net Network Solutions, Inc. C=US whois.oleane.net OLEANE SA C=FR whois.opensrs.net Open Shared Registration System C=US pcdc.net Pacific Communications Development Corp. C=TW whois.ra.net The Routing Arbiter Project C=US whois.ripe.net Reseaux IP Europeens C=NL whois.ripn.net Russian Institute for Public Networks C=RU whois.thnic.net Thailand Network Information Center C=TH whois.twnic.net Taiwan Network Information Center C=TW whois.dhs.org Domain Host Services C=AU whois.morris.org Morris Automated Information Network C=US whois.nic.ac nic.ac C=AC whois.nic.am AM Network Information Centre C=AM whois.nic.as ASNIC C=AS wp.tuwien.ac.at Technische Universitat Wien C=AT whois.risc.uni-linz.ac.at Research Institute for Symbolic Computation,University of Linz C=AT whois.wu-wien.ac.at Wirtschaftsuniversitaet Wien C=AT archie.au Australian Academic and Research Network C=AU whois.connect.com.au Connect.com.au Pty Ltd C=AU whois.adelaide.edu.au University of Adelaide C=AU whois.monash.edu.au Monash University C=AU uwa.edu.au University of Western Australia C=AU sserve.cc.adfa.oz.au University College, Australian Defense ForceAcademy C=AU whois.kuleuven.ac.be Katholieke Universiteit Leuven C=BE whois.belnet.be Belgian National Research Network C=BE whois.registro.br registro.br C=BR whois.camosun.bc.ca Camosun College, Victoria, B.C. C=CA whois.canet.ca Bell Canada Internet Transit Service C=CA whois.cdnnet.ca CDNnet C=CA whois.queensu.ca Queen's University, Kingston, Canada C=CA ac.nsac.ns.ca Nova Scotia Agricultural College C=CA whois.unb.ca University of New Brunswick C=CA panda1.uottawa.ca University of Ottawa C=CA dvinci.usask.ca University of Saskatchewan, Engineering C=CA whois.usask.ca University of Saskatchewan C=CA phys.uvic.ca University of Victoria, Physics & Astronomy C=CA whois.uwo.ca University of Western Ontario C=CA whois.nic.cc NIC.CC Registration Services C=CC whois.nic.ch SWITCH Swiss Academic and Research Network C=CH whois.nic.ck Cook Islands Network Information Centre C=CK whois.nic.cl U. de Chile (NIC Chile) C=CL whois.cnnic.net.cn Computer Network Center, Chinese Academy of Sciences C=CN whois.ci.ucr.ac.cr University of Costa Rica Computer Center C=CR whois.cuni.cz Charles University, Prague C=CZ whois.mff.cuni.cz Charles University, Faculty of Mathematics and Physics C=CZ www.fce.vutbr.cz Faculty of Civil Engineering, Technical University of Brno C=CZ gopher.fme.vutbr.cz Faculty of Mechanical Engineering, TechnicalUniversity of Brno C=CZ whois.fee.vutbr.cz Faculty of Elec. Eng. and Computer Sci., Technical Univ. of Brno C=CZ whois.vutbr.cz Technical University of Brno C=CZ whois.fh-koeln.de Fachhochschule Koeln C=DE whois.fzi.de Forschungszentrum Informatik C=DE hermes.informatik.htw-zittau.de HTW Zittau/Goerlitz Elektrotechnik/Informatik C=DE whois.nic.de DEutsches Network Information Center C=DE whois.th-darmstadt.de Darmstadt University of Technology C=DE whois.tu-chemnitz.de Technische Universitaet Chemnitz C=DE whois.uni-regensburg.de Universitaet Regensburg C=DE whois.uni-c.dk Danish Computing Centre for Research and Education C=DK whois.ut.ee University of Tartu C=EE whois.eunet.es EUnet, Goya, Spain C=ES whois.dit.upm.es Tech. Univ. Madrid, Telecommunications Highschool C=ES cs.hut.fi Helsinki University of Technology C=FI oulu.fi Oulu University C=FI vtt.fi Technical Research Centre of Finland C=FI whois.nic.fr Association Francaise pour le Nommage Internet en Cooperation C=FR whois.nordnet.fr NordNet C=FR whois.univ-lille1.fr University of Sciences and Technologies of Lille - France C=FR whois.hknic.net.hk HKNIC C=HK whois.registry.hm HM Domain Registry C=HM whois.iisc.ernet.in Indian Institute of Science C=IN whois.ncst.ernet.in National Centre for Software Technology C=IN isgate.is Association of Research Networks in Iceland C=IS isgate3.isnet.is Internet a Islandi C=IS pgebrehiwot.iat.cnr.it Nigerian TLD Registration Service C=NG dsa.nis.garr.it GARR-NIS c/o CNR-CNUCE C=IT whois.nic.it Italian Network Information Center C=IT whois.nic.mx Network Information Center - Mexico C=MX whois.aist-nara.ac.jp Nara Institute of Science and Technology C=JP whois-server.l.chiba-u.ac.jp Chiba University C=JP whois.hiroshima-u.ac.jp Hiroshima University C=JP gopher.educ.cc.keio.ac.jp Science and Technology Computing Center, Keio University C=JP whois.cc.keio.ac.jp Keio University C=JP whois.cc.uec.ac.jp University of Electro-Communications C=JP whois.yamanashi.ac.jp Yamanashi University C=JP whois.nic.ad.jp Japan Network Information Center C=JP www.orions.ad.jp Osaka Regional Information and Open Network Systems C=JP whois.domain.kg Kyrgyzstan TLD C=KZ sorak.kaist.ac.kr Korea Advanced Institute of Science & Technology C=KR whois.nic.or.kr Korea Network Information Center C=KR whois.domain.kz Kazahstan Domain Name Registry C=KZ whois.nic.li SWITCH Swiss Academic and Research Network C=LI whois.nic.lk Sri Lanka Domain Registry C=LK www.restena.lu RESTENA C=LU whois.nic.mm MM-NIC C=MM www.nic.mx NIC-Mexico C=MX condor.dgsca.unam.mx Univ. Nacional Autonoma de Mexico, D.G. de Servicios de Computo Academico C=MX domain-registry.nl Stichting Internet Domeinregistratie Nederland C=NL whois.norid.no UNINETT FAS (NORID) C=NO whois.nic.nu .NU Domain Ltd C=NU whois.canterbury.ac.nz University of Canterbury C=NZ directory.vuw.ac.nz Victoria University, Wellington C=NZ waikato.ac.nz Waikato University C=NZ whois.patho.gen.nz PATHOGEN C=NZ whois.domainz.net.nz Domainz -- The New Zealand Internet RegistryLtd C=NZ whois.rcp.net.pe Red Cientifica Peruana C=PE whois.icm.edu.pl Interdyscyplinarne Centrum Modelowania Matematycznego i Kompu