The last word (sometimes words) after the last period (.) of an Internet domain name generally represents either the type of the organization or the geographical location of that particular domain.

For example, microsoft.com (note .com at the end) means that microsoft.com is a domain name of a commercial entity.

Top Level Domains

    Example: school_name.EDU = Domain name of an educational institute

ARPA Old style Arpanet

COM  Commercial

EDU  Educational

GOV  Government

INT  International field

MIL  US Military

NATO Nato field

NET  Network

ORG  Non-Profit Organization

Country Codes

    Example: my_domain.CA = Canadian domain name

AD Andorra

AE United Arab Emirates 

AF Afghanistan

AG Antigua and Barbuda 

AI Anguilla

AL Albania 

AM Armenia 

AN Netherland Antilles

AO Angola

AQ Antarctica 

AR Argentina 

AS American Samoa

AT Austria 

AU Australia 

AW Aruba

AZ Azerbaidjan 

BA Bosnia-Herzegovina 

BB Barbados 

BD Bangladesh

BE Belgium 

BF Burkina Faso 

BG Bulgaria 

BH Bahrain 

BI Burundi

BJ Benin

BM Bermuda 

BN Brunei Darussalam

BO Bolivia 

BR Brazil 

BS Bahamas 

BT Buthan

BV Bouvet Island

BW Botswana 

BY Belarus 

BZ Belize 

CA Canada 

CC Cocos (Keeling) Isl.

CF Central African Rep.

CG Congo

CH Switzerland 

CI Ivory Coast

CK Cook Islands

CL Chile 

CM Cameroon 

CN China

CO Colombia 

CR Costa Rica 

CU Cuba 

CV Cape Verde

CX Christmas Island

CY Cyprus 

CZ Czech Republic 

DE Germany 

DJ Djibouti

DK Denmark 

DM Dominica 

DO Dominican Republic 

DZ Algeria 

EC Ecuador 

EE Estonia 

EG Egypt

EH Western Sahara

ES Spain 

ET Ethiopia

FI Finland 

FJ Fiji 

FK Falkland Isl.(Malvinas)

FM Micronesia

FO Faroe Islands 

FR France 

FX France (European Ter.) 

GA Gabon

GB Great Britain (UK) 

GD Grenada 

GE Georgia 

GH Ghana

GI Gibraltar

GL Greenland

GP Guadeloupe (Fr.)

GQ Equatorial Guinea

GF Guyana (Fr.)

GM Gambia

GN Guinea

GR Greece 

GT Guatemala 

GU Guam (US)

GW Guinea Bissau

GY Guyana

HK Hong Kong 

HM Heard & McDonald Is

HN Honduras 

HR Croatia 

HT Haiti

HU Hungary 

ID Indonesia 

IE Ireland 

IL Israel 

IN India 

IO British Indian O. Terr.

IQ Iraq

IR Iran 

IS Iceland 

IT Italy 

JM Jamaica 

JO Jordan

JP Japan 

KE Kenya 

KG Kirgistan 

KH Cambodia

KI Kiribati

KM Comoros

KN St.Kitts Nevis Anguilla

KP Korea (North) 

KR Korea (South) 

KW Kuwait 

KY Cayman Islands

KZ Kazachstan 

LA Laos

LB Lebanon 

LC Saint Lucia 

LI Liechtenstein

LK Sri Lanka 

LR Liberia

LS Lesotho 

LT Lithuania

LU Luxembourg 

LV Latvia 

LY Libya

MA Morocco 

MC Monaco

MD Moldavia 

MG Madagascar

MH Marshall Islands

ML Mali

MM Myanmar

MN Mongolia

MO Macau 

MP Northern Mariana Isl.

MQ Martinique (Fr.)

MR Mauritania

MS Montserrat

MT Malta 

MU Mauritius

MV Maldives

MW Malawi

MX Mexico 

MY Malaysia 

MZ Mozambique 

NA Namibia 

NC New Caledonia (Fr.)

NE Niger 

NF Norfolk Island

NG Nigeria

NI Nicaragua 

NL Netherlands 

NO Norway 

NP Nepal

NR Nauru

NT Neutral Zone

NU Niue

NZ New Zealand 

OM Oman

PA Panama 

PE Peru 

PF Polynesia (Fr.)

PG Papua New Guinea 

PH Philippines 

PK Pakistan 

PL Poland 

PM St. Pierre & Miquel

PN Pitcairn

PT Portugal 

PR Puerto Rico (US) 

PW Palau

PY Paraguay 

QA Qatar

RE Reunion (Fr.) 

RO Romania 

RU Russian Federation 

RW Rwanda

SA Saudi Arabia 

SB Solomon Islands

SC Seychelles

SD Sudan

SE Sweden 

SG Singapore 

SH St. Helena

SI Slovenia 

SJ Svalbard & Jan Maye

SK Slovak Republic 

SL Sierra Leone

SM San Marino

SN Senegal 

SO Somalia

SR Suriname 

ST St. Tome and Principe

SU Soviet Union 

SV El Salvador

SY Syria

SZ Swaziland

TC Turks & Caicos Isla

TD Chad

TF French Southern Terr.

TG Togo

TH Thailand 

TJ Tadjikistan 

TK Tokelau

TM Turkmenistan 

TN Tunisia 

TO Tonga

TP East Timor

TR Turkey 

TT Trinidad & Tobago 

TV Tuvalu

TW Taiwan 

TZ Tanzania

UA Ukraine 

UG Uganda

UK United Kingdom 

UM US Minor outlying Isl.

US United States 

UY Uruguay 

UZ Uzbekistan 

VA Vatican City State

VC St.Vincent & Grenad

VE Venezuela 

VG Virgin Islands (British

VI Virgin Islands (US) 

VN Vietnam 

VU Vanuatu

WF Wallis & Futuna Isl

WS Samoa

YE Yemen

YU Yugoslavia 

ZA South Africa 

ZM Zambia

ZR Zaire

ZW Zimbabwe