Transcript Document 7638774

Domain Names
1
Domain Names
• Fundamental building
block of a business.
• 2,000,000 new domain
names per month in the
dot-com and dot-net
domains (VeriSign,
November 2006).
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Domain Names
•
•
Make it easier for us humans – We Like Names, Computers Like Numbers
Not unlike telephone books
Brownkowski, John A …….. 256-555-2727
www.mensbowties.com ……… 75.144.42.2
Domain Name
IP Address
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Domain Names
• IP Address Rules
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Domain Names
• IP Address Rules
FOUR OCTETS OF NUMBERS ie. 1.2.3.4
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Domain Names
• IP Address Rules
FOUR OCTETS OF NUMBERS ie. 1.2.3.4
VALID RANGE FOR EACH OCTET is 0-255
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Domain Names
• IP Address Rules
FOUR OCTETS OF NUMBERS ie. 1.2.3.4
VALID RANGE FOR EACH OCTET is 0-255
EACH OCTET is separated by a dot. 0.123.4.255
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Domain Names
• Valid IP Address?
(A) 1.2.3.4
(D) 200.44.199
(B) 0.255.3.5.6
(E) 65.223.222.257
(C) 0.44.32.199
(F) 255.255.0.195
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Domain Names
• Domain Name
Resolution
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Domain Names
Dot-com Domain Name File from a VeriSign Root Server
FUJITSU NS NS1.FUJITSU
WPD NS DNS1.UTELFLA
WRENCH NS ENESTWO.WRENCH
BAKA NS WAV2.CLARITYCONNECT.NET.
CLMCPA NS NS2.MYSUPERPAGESHOSTING
PJDICK NS CMTU.MT.NS.ELS-GMS.ATT.NET.
CARBONATION NS NS6.HOSTEXCELLENCE
SHIELDMARK NS NS1.SITEBYTES.NL.
NS1.LOUDOUNCOUNTYJAILINMATES A 70.84.117.101
NS2.VTRECORDER A 70.84.117.102
NS1.BROWARDNOTARYPUBLIC A 70.84.117.101
NS2.DEOFFENDERS A 70.84.117.102
NS2.LIVINGSTONCOUNTYRECORDS A 70.84.117.102
NS1.NEPROPERTYINFO A 70.84.117.101
NS2.BN47W3 A 69.90.126.71
NS2.FREEUSPUBLICRECORDS A 70.84.117.102
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Domain Names
• Domain Name
Resolution
Domain names are resolved from right to left
www.jsu.edu
EDU
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Domain Names
• Domain Name
Resolution
Domain names are resolved from right to left
www.jsu.edu
EDU
JSU
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Domain Names
• Domain Name
Resolution
Domain names are resolved from right to left
www.jsu.edu
EDU
That’s why this is called the Top
Level Domain or TLD
JSU
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Domain Names
OTHER TLDs?
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Domain Names
OTHER TLDs?
The .aero domain is reserved for members of the air-transport industry and is sponsored by Société Internationale de Télécommunications Aéronautiques
(SITA).
The .biz domain is restricted to businesses and is operated by NeuLevel, Inc.
The .cat domain is reserved for the Catalan linguistic and cultural community and is sponsored by Fundació puntCat
The .com domain is operated by VeriSign Global Registry Services.
The .coop domain is reserved for cooperative associations and is sponsored by Dot Cooperation LLC.
The .info domain is operated by Afilias Limited.
The .jobs domain is reserved for human resource managers and is sponsored by Employ Media LLC.
The .mobi domain is reserved for consumers and providers of mobile products and services and is sponsored by mTLD Top Level Domain, Ltd.
The .museum domain is reserved for museums and is sponsored by the Museum Domain Management Association.
The .name domain is reserved for individuals and is operated by Global Name Registry.
The .net domain is operated by VeriSign Global Registry Services.
The .org domain is operated by Public Interest Registry. It is intended to serve the noncommercial community, but all are eligible to register within .org.
The .pro domain is restricted to credentialed professionals and related entities and is operated by RegistryPro.
The .travel domain is reserved for entities whose primary area of activity is in the travel industry and is sponsored by Tralliance Corporation.
Registrations in the domains listed above may be made through dozens of competitive registrars. For a list of the currently operating accredited registrars, go to
the InterNIC site. Information about becoming an accredited registrar is available on the ICANN site.
The .gov domain is reserved exclusively for the United States Government. It is operated by the US General Services Administration.
The .edu domain is reserved for postsecondary institutions accredited by an agency on the U.S. Department of Education's list of Nationally Recognized
Accrediting Agencies and is registered only through Educause.
The .mil domain is reserved exclusively for the United States Military. It is operated by the US DoD Network Information Center.
The .int domain is used only for registering organizations established by international treaties between governments. It is operated by the IANA .int Domain
Registry.
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Domain Names
gs – South Georgia and the South
Sandwich Islands
.gt – Guatemala
.gu – Guam
.ac – Ascension Island
.cm – Cameroon
.gw – Guinea-Bissau
.ad – Andorra
.cn – China
.gy – Guyana
.ae – United Arab Emirates
.co – Colombia
.hk – Hong Kong
.af – Afghanistan
.cr – Costa Rica
.hm – Heard and McDonald Islands
.ag – Antigua and Barbuda
.cu – Cuba
.hn – Honduras
.ai – Anguilla
.cv – Cape Verde
.hr – Croatia/Hrvatska
.al – Albania
.cx – Christmas Island
.ht – Haiti
.am – Armenia
.cy – Cyprus
.hu – Hungary
.an – Netherlands Antilles
.cz – Czech Republic
.id – Indonesia
.ao – Angola
.de – Germany
.ie – Ireland
.aq – Antarctica
.dj – Djibouti
.il – Israel
.ar – Argentina
.dk – Denmark
.im – Isle of Man
.as – American Samoa
.dm – Dominica
.in – India
.at – Austria
.do – Dominican Republic
.io – British Indian Ocean Territory
.au – Australia
.dz – Algeria
.iq – Iraq
.aw – Aruba
.ec – Ecuador
.ir – Iran, Islamic Republic of
.ax – Aland Islands
.ee – Estonia
.is – Iceland
.az – Azerbaijan
.eg – Egypt
.it – Italy
.ba – Bosnia and Herzegovina
.eh – Western Sahara
.je – Jersey
.bb – Barbados
.er – Eritrea
.jm – Jamaica
.bd – Bangladesh
.es – Spain
.jo – Jordan
.be – Belgium
.et – Ethiopia
.jp – Japan
.bf – Burkina Faso
.eu – European Union
.ke – Kenya
.bg – Bulgaria
.fi – Finland
.kg – Kyrgyzstan
.bh – Bahrain
.fj – Fiji
.bi – Burundi
.fk – Falkland Islands (Malvinas) .kh – Cambodia
.bj – Benin
.fm – Micronesia, Federated States.kiof– Kiribati
.km – Comoros
.bm – Bermuda
.fo – Faroe Islands
.kn – Saint Kitts and Nevis
.bn – Brunei Darussalam
.fr – France
.kp – Korea, Democratic People's
.bo – Bolivia
.ga – Gabon
Republic
.br – Brazil
.gb – United Kingdom
.kr – Korea, Republic of
.bs – Bahamas
.gd – Grenada
.kw – Kuwait
.bt – Bhutan
.ge – Georgia
.ky – Cayman Islands
.bv – Bouvet Island
.gf – French Guiana
.kz – Kazakhstan
.bw – Botswana
.gg – Guernsey
.la – Lao People's Democratic
.by – Belarus
.gh – Ghana
Republic
.bz – Belize
.gi – Gibraltar
.lb – Lebanon
.ca – Canada
.gl – Greenland
.lc – Saint Lucia
.cc – Cocos (Keeling) Islands
.gm – Gambia
.li – Liechtenstein
.cd – Congo, The Democratic Republic of.gn
the – Guinea
.lk – Sri Lanka
.cf – Central African Republic
.gp – Guadeloupe
.lr – Liberia
.cg – Congo, Republic of
.gq – Equatorial Guinea
.ch – Switzerland
.gr – Greece
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OTHER TLDs?
ls – Lesotho
.lt – Lithuania
.lu – Luxembourg
.lv – Latvia
.ly – Libyan Arab Jamahiriya
.ma – Morocco
.mc – Monaco
.md – Moldova, Republic of
.me – Montenegro
.mg – Madagascar
.mh – Marshall Islands
.mk – Macedonia, The Former
Yugoslav Republic of
.ml – Mali
.mm – Myanmar
.mn – Mongolia
.mo – Macao
.mp – Northern Mariana Islands
.mq – Martinique
.mr – Mauritania
.ms – Montserrat
.mt – Malta
.mu – Mauritius
.mv – Maldives
.mw – Malawi
.mx – Mexico
.my – Malaysia
.mz – Mozambique
.na – Namibia
.nc – New Caledonia
.ne – Niger
.nf – Norfolk Island
.ng – Nigeria
.ni – Nicaragua
.nl – Netherlands
.no – Norway
.np – Nepal
.nr – Nauru
.nu – Niue
.nz – New Zealand
.om – Oman
.pa – Panama
.pe – Peru
.pf – French Polynesia
.pg – Papua New Guinea
.ph – Philippines
.pk – Pakistan
.pl – Poland
.
pm – Saint Pierre and Miquelon
.pn – Pitcairn Island
.pr – Puerto Rico
.ps – Palestinian Territory,
Occupied
.pt – Portugal
.pw – Palau
.py – Paraguay
.qa – Qatar
.re – Reunion Island
.ro – Romania
.rs – Serbia
.ru – Russian Federation
.rw – Rwanda
.sa – Saudi Arabia
.sb – Solomon Islands
.sc – Seychelles
.sd – Sudan
.se – Sweden
.sg – Singapore
.sh – Saint Helena
.si – Slovenia
..su – Soviet Union (being
phased out)
.sv – El Salvador
.sy – Syrian Arab Republic
.sz – Swaziland
.tc – Turks and Caicos Islands
.td – Chad
.tg – Togo
.th – Thailand
.tj – Tajikistan
.tk – Tokelau
.tl – Timor-Leste
.tm – Turkmenistan
.tn – Tunisia
.to – Tonga
.tp – East Timor
.tr – Turkey
.tt – Trinidad and Tobago
.tv – Tuvalu
.tw – Taiwan
.tz – Tanzania
.ua – Ukraine
.ug – Uganda
.uk – United Kingdom
.um – United States Minor
Outlying Islands
.us – United States
.uy – Uruguay
.uz – Uzbekistan
.va – Holy See (Vatican City
State)
.vc – Saint Vincent and the
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