List of the oldest currently registered Internet domain names explained

This is a list of the oldest extant registered generic top-level domains used in the Domain Name System of the Internet.

Until late February 1986, Domain Registration was limited to organizations with access to ARPA. Public registration was revealed on Usenet on February 24, 1986.^[1]

.com

See main article: .com.

Rank	Date of registration	Domain	Registered to
1		symbolics.com	Symbolics
2		bbn.com	BBN Technologies
3		think.com	Thinking Machines
4		mcc.com	Microelectronics and Computer Technology Corporation
5		dec.com	Digital Equipment Corporation
6		northrop.com	Northrop Corporation
7		xerox.com	Xerox
8		sri.com	SRI International
9		hp.com	Hewlett-Packard
10		bellcore.com	Bell Communications Research
11		ibm.com	IBM
12		sun.com	Sun Microsystems
13		intel.com	Intel
14		ti.com	Texas Instruments
15		att.com	AT&T
16		gmr.com	General Motors Research Laboratories
17		tek.com	Tektronix
18		fmc.com	FMC Corporation
19		ub.com	Ungermann-Bass
20		bell-atl.com	Bell Atlantic
21		ge.com	General Electric
22		grebyn.com	Grebyn Corporation
23		isc.com	Interactive Systems Corporation
24		nsc.com	National Semiconductor
25		stargate.com	Stargate Information Services^[2] ^[3]
26		boeing.com	Boeing
27		itcorp.com	Interrupt Technology Corporation
28		siemens.com	Siemens AG
29		pyramid.com	Pyramid Technology
30		alphacdc.com	Alpha Communications Development Corporation
31		bdm.com	BDM Corporation
32		fluke.com	Fluke Corporation
33		inmet.com	Intermetrics
34		kesmai.com	Kesmai
35		mentor.com	Mentor Graphics
36		nec.com	NEC Corporation
37		ray.com	Raytheon
38		rosemount.com	Rosemount Inc.
39		vortex.com	Vortex Technology
40		alcoa.com	Alcoa
41		gte.com	General Telephone and Electronics
42		adobe.com	Adobe Systems
43		amd.com	Advanced Micro Devices (AMD)
44		das.com	DA Systems, Inc.
45		data-io.com	Data I/O Corporation
46		octopus.com	Octopus Enterprises
47		portal.com	Portal Communications Company
48		teltone.com	Teltone Corporation
49		3com.com	3Com Corporation
50		amdahl.com	Amdahl Corporation
51		ccur.com	Concurrent Computer Corporation
52		ci.com	Cognition, Inc.
53		convergent.com	Convergent Technologies
54		dg.com	Data General
55		peregrine.com	Peregrine Systems
56		quad.com	Quadratron Systems Inc.
57		sq.com	SoftQuad
58		tandy.com	Tandy Corporation
59		tti.com	Citicorp/TTI
60		unisys.com	Unisys
61		cgi.com	Carnegie Group Inc.
62		cts.com	Crash TimeSharing
63		spdcc.com	S.P. Dyer Computer Consulting
64		apple.com	Apple Computer
65		nma.com	Network Management Associates
66		prime.com	Prime Computer
67		philips.com	Philips
68		datacube.com	Datacube Inc.
69		kai.com	Kuck and Associates, Inc.
70		tic.com	Texas Internet Consulting
71		vine.com	Vine Technology
72			ncr.com	NCR Corporation
73		cisco.com	Cisco Systems
74		rdl.com	Research Development Laboratories
75		slb.com	Schlumberger Limited
76		parcplace.com	ParcPlace Systems, Inc.
77		utc.com	United Technologies Corporation
78		ide.com	Interactive Development Environments
79		trw.com	TRW
80		unipress.com	Unipress Software
81		dupont.com	DuPont
82		lockheed.com	Lockheed Corporation
83		rosetta.com	Rosetta Consulting
84		toad.com	John Gilmore
85		quick.com	Quicksilver Engineering
86		allied.com	AlliedSignal
87		dsc.com	Digital Sound Corporation
88		sco.com	Santa Cruz Operation
89		gene.com	Genentech
90		kccs.com	KC Computer Sciences
91		spectra.com	Spectragraphics Corporation
92		wlk.com	W.L. Kennedy Jr. & Associates
93		mentat.com	Mentat Inc.
94		wyse.com	Wyse Technology
95		cfg.com	Caine, Farber & Gordon, Inc.
96		marble.com	Marble Associates, Inc.
97		cayman.com	Cayman Systems, Inc.
98		entity.com	Entity Cyber, Inc.
99		ksr.com	Kendall Square Research
100		nynexst.com	NYNEX Science & Technology
Sources:^[4]

.org

See main article: .org.

Rank	Date of registration	Domain	Registered to
0		darpa.org	DARPA
1		mitre.org	Mitre Corporation
2		src.org	Semiconductor Research Corporation
3		super.org	Center for Computing Sciences
4		aero.org	The Aerospace Corporation
5		mcnc.org	Microelectronics Center of North Carolina
6		rand.org	RAND Corporation
7		mn.org	SkyPoint Communications
8		rti.org	RTI International
9		usenix.org	USENIX
10		software.org	BSA Foundation (launched by Software Alliance)^[5]
11		fidonet.org	FidoNet
12		ampr.org	AMPRNet
13		osf.org	Open Software Foundation
14		ida.org	Institute for Defense Analyses
15		cactus.org
16		nm.org
17		ccf.org	Cleveland Clinic
18		erim.org
19		ski.org	Smith-Kettlewell Eye Research Institute
20		iti.org
21		jax.org	Jackson Laboratory
22		ncsc.org	National Center for State Courts
23		aaai.org	Association for the Advancement of Artificial Intelligence
24		ie.org
25		stjude.org	St. Jude Children's Research Hospital
26		mbari.org	Monterey Bay Aquarium Research Institute
27		castle.org
28		carl.org
29		msri.org	Mathematical Sciences Research Institute
30		agi.org
31		sf-bay.org
32		mef.org
33		oclc.org	OCLC
34		ei.org
35		cas.org
36		battelle.org	Battelle Memorial Institute
37		sub.org
38		aip.org	American Institute of Physics
39		sdpa.org
40		lonestar.org
41		ieee.org	Institute of Electrical and Electronics Engineers
42		cit.org
43		sematech.org	SEMATECH
44		omg.org
45		decus.org
46		sublink.org
47		cam.org
48		cpl.org	Cleveland Public Library
49		ori.org	Oregon Research Institute
50		fhcrc.org	Fred Hutchinson Cancer Research Center
51		nwf.org	National Wildlife Federation
52		mskcc.org
53		boystown.org	Boys Town
54		bwc.org
55		topsail.org
56		ciit.org
57		central.org
58		mind.org
59		stonemarche.org
60		cshl.org
61		fstrf.org
62		dorsai.org
63		elf.org
64		siggraph.org	SIGGRAPH
65		sjh.org
66		igc.org	Institute for Global Communications
67		cotdazr.org
68		eff.org	Electronic Frontier Foundation
69		sfn.org	Society for Neuroscience
70		csn.org
71		sfbr.org
72		ais.org
73		hjf.org
74		uniforum.org
75		wgbh.org	WGBH Educational Foundation
76		fsf.org	Free Software Foundation
77		eso.org	European Southern Observatory
78		tiaa.org	Teachers Insurance and Annuity Association of America
79		nysernet.org	NYSERNet
80		acr.org	American College of Radiology
81		nybc.org	New York Blood Center
82		nypl.org	New York Public Library
83		cnytdo.org
84		htr.org
85		hvtdc.org
86		nycp.org
87		bpl.org	Boston Public Library
88		scra.org	South Carolina Research Authority
89		amnh.org	American Museum of Natural History
90		hellnet.org
91		sil.org	SIL International
92		apc.org
93		mobot.org	Missouri Botanical Garden
94		cni.org	Coalition for Networked Information
95		gumption.org
96		hslc.org
97		guild.org
98		acs.org	American Chemical Society
99		lpl.org
100		rsage.org
Sources:

.edu

See main article: .edu. Registration within .edu is restricted to accredited educational institutions. Prior to October 2001, registration was available worldwide; it has since been limited to institutions based in the United States.^[6]

Rank	Date of registration	Domain	Registered to
0		darpa.edu	DARPA
1		berkeley.edu	University of California, Berkeley
1		cmu.edu	Carnegie Mellon University
1		purdue.edu	Purdue University
1		rice.edu	Rice University
1		ucla.edu	University of California, Los Angeles
6		rutgers.edu	Rutgers University
7		mit.edu	Massachusetts Institute of Technology
8		harvard.edu	Harvard University
9		columbia.edu	Columbia University
10		cornell.edu	Cornell University
11		uiuc.edu	University of Illinois at Urbana–Champaign
12		udel.edu	University of Delaware
13		umd.edu	University of Maryland, College Park
14		utexas.edu	University of Texas at Austin
15		usc.edu	University of Southern California
16		wisc.edu	University of Wisconsin–Madison
16		uci.edu	University of California, Irvine
18		stanford.edu	Stanford University
19		umich.edu	University of Michigan
20		ucsd.edu	University of California, San Diego
21		caltech.edu	California Institute of Technology
22		arizona.edu	University of Arizona
23		ucsf.edu	University of California, San Francisco
24		dartmouth.edu	Dartmouth College
24		indiana.edu	Indiana University Bloomington
24		okstate.edu	Oklahoma State University
24		unlv.edu	University of Nevada, Las Vegas
24		wfu.edu	Wake Forest University
24		wright.edu	Wright State University
30		isi.edu	Information Sciences Institute
31		ucdavis.edu	University of California, Davis
31		uta.edu	University of Texas at Arlington
31		virginia.edu	University of Virginia
34		ufl.edu	University of Florida
34		bu.edu	Boston University
34		rpi.edu	Rensselaer Polytechnic Institute
34		umass.edu	University of Massachusetts
34		northeastern.edu	Northeastern University
34		usl.edu	University of Southwestern Louisiana (USL) 1960~1999, then: University of Louisiana at Lafayette
40		gatech.edu	Georgia Institute of Technology
40		toronto.edu	University of Toronto^[7]
40		sju.edu	Saint Joseph's University
40		uab.edu	University of Alabama at Birmingham
44		carleton.edu	Carleton College
44		duke.edu	Duke University
44		upenn.edu	University of Pennsylvania
44		emory.edu	Emory University
44		bgsu.edu	Bowling Green State University
44		colorado.edu	University of Colorado Boulder
50		unc.edu	University of North Carolina at Chapel Hill
51		usd.edu	University of South Dakota
51		uwp.edu	University of Wisconsin–Parkside
51		wellesley.edu	Wellesley College
51		wku.edu	Western Kentucky University
55		psu.edu	Pennsylvania State University
56		brown.edu	Brown University
56		unm.edu	University of New Mexico
58		syr.edu	Syracuse University
58		depaul.edu	DePaul University
60		washington.edu	University of Washington
60		wcslc.edu	Westminster College (university since 2023)
62		moravian.edu	Moravian College
62		unt.edu	University of North Texas
62		usf.edu	University of South Florida
62		williams.edu	Williams College
66		merit.edu	Merit Network
67		nyu.edu	New York University
68		rochester.edu	University of Rochester
69		unh.edu	University of New Hampshire
69		ucf.edu	University of Central Florida
69		hawaii.edu	University of Hawaii
69		csufresno.edu	California State University, Fresno
73		georgetown.edu	Georgetown University
73		muskingum.edu	Muskingum University
73		odu.edu	Old Dominion University
76		usma.edu	United States Military Academy
77		clarkson.edu	Clarkson University
78		oberlin.edu	Oberlin College
78		ohiou.edu	Ohio University
78		unr.edu	University of Nevada, Reno
81		utah.edu	University of Utah
82		byu.edu	Brigham Young University
82		lsu.edu	Louisiana State University
84		umn.edu	University of Minnesota
85		ucsc.edu	University of California, Santa Cruz
86		bsu.edu	Ball State University
86		csuchico.edu	California State University, Chico
86		kent.edu	Kent State University
86		clemson.edu	Clemson University
90		albany.edu	University at Albany
91		whoi.edu	Woods Hole Oceanographic Institution
92		mu.edu	Marquette University
93		yale.edu	Yale University
94		jhu.edu	Johns Hopkins University
95		rockefeller.edu	The Rockefeller University
96		princeton.edu	Princeton University
97		yu.edu	Yeshiva University
98		wsu.edu	Washington State University
98		wwu.edu	Western Washington University
98		uvm.edu	University of Vermont
98		tulane.edu	Tulane University

.net

See main article: .net.

Rank	Date of registration	Domain	Registered to
0		darpa.net	DARPA
1		nordu.net	Nordic Infrastructure for Research and Education
2		broken.net	Jason Matthews^[8] ^[9]
3		nsf.net	National Science Foundation Network
4		nyser.net	New York State Education and Research Network
5		uu.net	UUNET
6		sesqui.net	Sesquicentennial Network (SEQSUINet)
7		mr.net	Minnesota Regional Network (MRNet)
8		oar.net	Ohio Academic Resources Network
9		sura.net	Southeastern Universities Research Association
10		the.net	Texas Higher Education Network (THEnet)
11		nwnet.net	NorthWestNet
12		es.net	Energy Sciences Network
13		mid.net	MIDnet
14		barrnet.net	Bay Area Regional Research Network (BARRNet)
15		cic.net	CICNet
16		hawaii.net
17		psi.net	PSINet
18		near.net	New England Academic and Research Network
19		eu.net	EUnet
20		ln.net
21		sub.net
22		westnet.net	Westnet
23		cypress.net
24		cerf.net	California Education and Research Federation Network
25		risq.net	Réseau d'informations scientifiques du Québec
26		ca.net	CANARIE
27		wiscnet.net	WiscNet
28		cent.net
29		alter.net
30		ans.net	Advanced Network and Services
31		mich.net	Merit Network
32		hk.net
33		cix.net
34		team.net
35		five-colleges.net	Five College Consortium
36		ja.net	JANET
37		illinois.net
38		more.net
39		ohio-dmz.net
40		icp.net
41		swip.net
42		michnet.net
43		notes.net
44		merit.net	Merit Network
45		mu.net
46		first.net
47		ebone.net
48		holonet.net
49		ripe.net	RIPE
50		csn.net
51		mcast.net
52		life.net
53		rahul.net
54		cyber.net
55		sprintlink.net
56		ids.net
57		q.net
58		netconnect.net
59		use.net
60		tip.net
61		capcon.net
62		nexsys.net
63		umass.net
64		solinet.net
65		fish.net
66		ps.net
67		eds.net
68		lig.net
69		ix.net
70		aol.net
71		win.net
72		cren.net
73		path.net
74		quake.net
75		access.net
76		tsoft.net
77		inter.net
78		individual.net
79		raider.net
80		europa.net
81		demon.net
82		press.net
83		bc.net
84		internic.net	InterNIC
85		cls.net
86		sam.net
87		kanren.net
88		ubs.net
89		digex.net
90		mobilecomm.net
91		xlink.net
92		fr.net
93		onenet.net
94		aco.net
95		clark.net
96		olympus.net
97		satlink.net
98		netcom.net
99		nl.net
100		ins.net
Sources:

.mil

See main article: .mil.

.gov

See main article: .gov.

Rank	Date of registration	Domain	Registered to
0		gov	DARPA
1	June 1985^[10]	css.gov	Central Security Service

.int

See main article: .int.

Rank	Date of registration	Domain	Registered to
0		int	Internet Assigned Numbers Authority
1		ffa.int	Pacific Islands Forum Fisheries Agency
2		ip6.int	Internet Assigned Numbers Authority
3		commonwealth.int	Commonwealth of Nations
3		nsap.int	Internet Assigned Numbers Authority
3		ymca.int	Young Men's Christian Association
6		itu.int	International Telecommunication Union
6		reliefweb.int	ReliefWeb
8		tpc.int	The Phone Company
9		adsn.int	Internet Assigned Numbers Authority
10		cto.int	Commonwealth Telecommunications Organisation
11		esa.int	European Space Agency
12		wipo.int	World Intellectual Property Organization
13		ohr.int	Office of the High Representative in Bosnia and Herzegovina
14		iai.int	Inter-American Institute for Global Change Research
15		sadc.int	Southern African Development Community
16		ecb.int	European Central Bank
17		eu.int	European Union
18		oie.int	World Organisation for Animal Health
19		iom.int	International Organisation for Migration
20		interpol.int	International Criminal Police Organization
21		un.int	United Nations
22		comesa.int	Common Market for Eastern and Southern Africa
23		nato.int	North Atlantic Treaty Organization
24		ices.int	International Council for the Exploration of the Sea
25		weu.int	Western European Union
26		ecmwf.int	European Centre for Medium-Range Weather Forecasts
27		coe.int	Council of Europe
28		efta.int	European Free Trade Association
29		upov.int	International Union for the Protection of New Varieties of Plants
30		idea.int	International Institute for Democracy and Electoral Assistance
31		iaea.int	International Atomic Energy Agency
31		icao.int	International Civil Aviation Organization
31		upu.int	Universal Postal Union
34		who.int	World Health Organisation
35		bceao.int	Central Bank of West African States
35		emep.int	Convention on Long-Range Transboundary Air Pollution
35		idb.int	Inter-American Development Bank
35		iic.int	Inter-American Investment Corporation
39		uemoa.int	West African Economic and Monetary Union
39		unccd.int	United Nations Convention to Combat Desertification
41		apnic.int	Asia-Pacific Network Information Centre
41		atma.int	Internet Assigned Numbers Authority
41		basel.int	Basel Convention
41		beac.int	Bank of Central African States
41		ecowas.int	Economic Community of West African States
41		era.int	Academy of European Law
41		eurocontrol.int	European Organisation for the Safety of Air Navigation
41		ilo.int	International Labour Organization
41		inbar.int	International Network for Bamboo and Rattan
41		ippc.int	International Plant Protection Convention
41		issa.int	International Social Security Association
41		ivi.int	International Vaccine Institute
41		kedo.int	Internet Assigned Numbers Authority
41		nasco.int	North Atlantic Salmon Conservation Organization
41		nato-pa.int	NATO Parliamentary Assembly
41		nib.int	Nordic Investment Bank
41		oecd.int	Organisation for Economic Co-Operation and Development
41		oiv.int	International Organisation of Vine and Wine
41		pic.int	Rotterdam Convention
41		pices.int	North Pacific Marine Science Organization
41		redcross.int	International Federation of Red Cross and Red Crescent Societies
41		spc.int	Pacific Community
41		unesco.int	United Nations Education, Scientific and Cultural Organization
41		unfccc.int	United Nations Framework Convention on Climate Change
41		worldbank.int	The World Bank
41		wto.int	World Trade Organization
67		ifad.int	International Fund for Agricultural Development
67		iica.int	Inter-American Institute for Cooperation on Agriculture
69		eumetsat.int	European Organisation for the Exploitation of Meteorological Satellites
69		wmo.int	World Meteorological Organization
71		itso.int	International Telecommunications Satellite Organization
72		oas.int	Organization of American States
73		cde.int	Centre for the Development of Enterprise
73		cta.int	Technical Centre for Agricultural and Rural Cooperation ACP-EU
73		ectel.int	Eastern Caribbean Telecommunications Authority
76		eurofish.int	Eurofish
77		stcu.int	Science and Technology Center in Ukraine
78		pops.int	Stockholm Convention on Persistent Organic Pollutants
79		idlo.int	International Development Law Organization
80		eftasurv.int	European Free Trade Association Surveillance Authority
81		las.int	League of Arab States
82		eac.int	East African Community
83		icc-cpi.int	International Criminal Court
84		col.int	The Commonwealth of Learning
85		cbd.int	Convention on Biological Diversity
86		iccat.int	International Commission for the Conservation of Atlantic Tunas
86		oiml.int	International Organization of Legal Metrology
88		epo.int	European Patent Office
88		eutelsatigo.int	European Telecommunications Satellite Organization
88		nafo.int	Northwest Atlantic Fisheries Organization
91		mercosur.int	Southern Common Market
92		acp.int	African, Caribbean and Pacific Group of States
92		cms.int	Convention on the Conservation of Migratory Species of Wild Animals
94		glfc.int	Great Lakes Fishery Commission
95		ctbto.int	Preparatory Commission for the Comprehensive Nuclear-Test-Ban
96		apt.int	Asia-Pacific Telecommunity
97		cospas-sarsat.int	International Cospas-Sarsat Programme
98		iho.int	International Hydrographic Organization
99		cedare.int	Centre for Environment and Development for the Arab Region and Europe
100		sica.int	Central American Integration System

.arpa

See main article: .arpa.

Rank	Date of registration	Domain	Registered to
0		arpa	Internet Architecture Board (originally used by DARPA)
1		in-addr.arpa	Internet Architecture Board
2		e164.arpa	Internet Architecture Board
3		ip6.arpa	Internet Architecture Board
4		uri.arpa	Internet Architecture Board
4		urn.arpa	Internet Architecture Board
6		iris.arpa	Internet Architecture Board
7		in-addr-servers.arpa	Internet Architecture Board
7		ip6-servers.arpa	Internet Architecture Board
9		ipv4only.arpa	Internet Architecture Board
10		as112.arpa	Internet Architecture Board
11		home.arpa	Internet Architecture Board
Sources:^[11]

References

1. Web site: Some interesting news from the world of CSnet.... 2019-06-06.
2. Web site: Oldest domains in the com, net, and org TLDs . Frederic Cambus . 27 June 2018 . 26 June 2018.
3. News: Managed Data Buys Stargate Chicago Center. 2008-08-27. Data Center Knowledge. 2018-06-27.
4. Web site: Duskic . Goran . 100 oldest dot com domains . dead . https://web.archive.org/web/20070313202458/http://www.jottings.com/100-oldest-dot-com-domains.htm . 2007-03-13 . 2022-06-18 . Jottings.com.
5. Web site: Software.org Connects the Dots Between Software and Society. www.bsa.org. en. 2018-06-27.
6. Web site: Eligibility . Educause . 2021-10-05.
7. Web site: Whois toronto.edu .
8. Web site: 2010-08-20 . Jason Matthews . live . https://web.archive.org/web/20140329030156/https://www.illumos.org/users/891 . 2014-03-29 . 2018-06-27 . illumos.org . en.
9. Web site: 26 July 1997 . Your mail to Jason Matthews . dead . https://web.archive.org/web/20120105080153/http://www.nanog.org/mailinglist/mailarchives/old_archive/1997-07/msg00944.html . 2012-01-05 . 2018-06-27 . www.nanog.org.
10. Hobbes' Internet Timeline . 2235 . 32 . Zakon . R. . Paul Hoffman (VPNC) . November 1997 . Network Working Group . 10.17487/RFC2235.
11. Web site: IANA — .ARPA Domain . 2019-02-16 . www.iana.org.