루트 도메인 아래의 단계를 1단계 도메인 또는 최상위 도메인(TLD, Top-Level Domain)라고 부르며, 차상위 단계를 2단계 도메인(SLD, Second-Level Domain)이라 부릅니다.
최상위 도메인으로는 com, net, org, edu, gov, mil, int 등 인터넷 초창기부터 사용되던 7개의 도메인(Top Level Domain)과 인터넷이 국제화되면서 ISO 3166에 의거하여 세계의 각 국가들을 두자리 영문 약자로 표현한 약 190여개의 국가 도메인(national top level domain)을 포함하여 전세계적으로 약 200여개의 최상위 도메인이 있습니다.
국가 도메인 kr은 한국을 대표하는 최상위 도메인이며, jp는 일본, fr은 프랑스를 의미합니다. 각 국가들은 서로 다른 최상위 도메인을 사용하며, 최상위 도메인별로 도메인 네임 체계 및 등록 원칙이 다를수 있습니다.
최상위 도메인이 com인 경우, 2단계에서 도메인 신청자가 원하는 이름을 사용하실 수 있으며, 최상위 도메인이 kr(한국) 또는 jp(일본)인 경우, 2단계 도메인은 기관을 분류(co, or, ac 등)하기 위해서 미리 정의된 이름을 사용하며, 3단계에서 도메인 신청자가 원하는 이름을 사용하실 수 있습니다
Country Code
AFGHANISTAN ----------------------------------- AF
ALBANIA --------------------------------------- AL
ALGERIA --------------------------------------- DZ
AMERICAN SAMOA ------------------------------- AS
ANDORRA --------------------------------------- AD
ANGOLA ---------------------------------------- AO
ANGUILLA -------------------------------------- AI
ANTARCTICA ------------------------------------ AQ
ANTIGUA AND BARBUDA --------------------------- AG
ARGENTINA ------------------------------------- AR
ARMENIA --------------------------------------- AM
ARUBA ----------------------------------------- AW
ASCENSION ISLAND ------------------------------ AC
AUSTRALIA ------------------------------------- AU
AUSTRIA --------------------------------------- AT
AZERBAIJAN ------------------------------------ AZ
BAHAMAS --------------------------------------- BS
BAHRAIN --------------------------------------- BH
BANGLADESH ------------------------------------ BD
BARBADOS -------------------------------------- BB
BELARUS --------------------------------------- BY
BELGIUM --------------------------------------- BE
BELIZE ---------------------------------------- BZ
BENIN ----------------------------------------- BJ
BERMUDA --------------------------------------- BM
BHUTAN ---------------------------------------- BT
BOLIVIA --------------------------------------- BO
BOSNIA AND HERZEGOWINA ------------------------ BA
BOTSWANA -------------------------------------- BW
BOUVET ISLAND --------------------------------- BV
BRAZIL ---------------------------------------- BR
BRITISH INDIAN OCEAN TERRITORY ---------------- IO
BRUNEI DARUSSALAM ----------------------------- BN
BULGARIA -------------------------------------- BG
BURKINA FASO ---------------------------------- BF
BURUNDI --------------------------------------- BI
CAMBODIA -------------------------------------- KH
CAMEROON -------------------------------------- CM
CANADA ---------------------------------------- CA
CAPE VERDE ------------------------------------ CV
CAYMAN ISLANDS -------------------------------- KY
CENTRAL AFRICAN REPUBLIC ---------------------- CF
CHAD ------------------------------------------ TD
CHILE ----------------------------------------- CL
CHINA ----------------------------------------- CN
CHRISTMAS ISLAND ------------------------------ CX
COCOS (KEELING) ISLANDS ----------------------- CC
COLOMBIA -------------------------------------- CO
COMOROS --------------------------------------- KM
CONGO, DEMOCRATIC PEOPLE'S REPUBLIC ----------- CD
CONGO, REPUBLIC OF ---------------------------- CG
COOK ISLANDS ---------------------------------- CK
COSTA RICA ------------------------------------ CR
COTE D'IVOIRE --------------------------------- CI
CROATIA (local name: Hrvatska) ---------------- HR
CUBA ------------------------------------------ CU
CYPRUS ---------------------------------------- CY
CZECH REPUBLIC -------------------------------- CZ
DENMARK --------------------------------------- DK
DJIBOUTI -------------------------------------- DJ
DOMINICA -------------------------------------- DM
DOMINICAN REPUBLIC ---------------------------- DO
EAST TIMOR ------------------------------------ TP
ECUADOR --------------------------------------- EC
EGYPT ----------------------------------------- EG
EL SALVADOR ----------------------------------- SV
EQUATORIAL GUINEA ----------------------------- GQ
ERITREA --------------------------------------- ER
ESTONIA --------------------------------------- EE
ETHIOPIA -------------------------------------- ET
FALKLAND ISLANDS (MALVINAS) ------------------- FK
FAROE ISLANDS --------------------------------- FO
FIJI ------------------------------------------ FJ
FINLAND --------------------------------------- FI
FRANCE ---------------------------------------- FR
FRANCE, METROPOLITAN -------------------------- FX
FRENCH GUIANA --------------------------------- GF
FRENCH POLYNESIA ------------------------------ PF
FRENCH SOUTHERN TERRITORIES ------------------- TF
GABON ----------------------------------------- GA
GAMBIA ---------------------------------------- GM
GEORGIA --------------------------------------- GE
GERMANY (DEUTSCHLAND) ------------------------- DE
GHANA ----------------------------------------- GH
GIBRALTAR ------------------------------------- GI
GREECE ---------------------------------------- GR
GREENLAND ------------------------------------- GL
GRENADA --------------------------------------- GD
GUADELOUPE ------------------------------------ GP
GUAM ------------------------------------------ GU
GUATEMALA ------------------------------------- GT
GUERNSEY -------------------------------------- GG
GUINEA ---------------------------------------- GN
GUINEA-BISSAU --------------------------------- GW
GUYANA ---------------------------------------- GY
HAITI ----------------------------------------- HT
HEARD AND MC DONALD ISLANDS ------------------- HM
HOLY SEE (VATICAN CITY STATE) ----------------- VA
HONDURAS -------------------------------------- HN
HONG KONG ------------------------------------- HK
HUNGARY --------------------------------------- HU
ICELAND --------------------------------------- IS
INDIA ----------------------------------------- IN
INDONESIA ------------------------------------- ID
IRAN (ISLAMIC REPUBLIC OF) -------------------- IR
IRAQ ------------------------------------------ IQ
IRELAND --------------------------------------- IE
ISLE OF MAN ----------------------------------- IM
ISRAEL ---------------------------------------- IL
ITALY ----------------------------------------- IT
JAMAICA --------------------------------------- JM
JAPAN ----------------------------------------- JP
JERSEY ---------------------------------------- JE
JORDAN ---------------------------------------- JO
KAZAKHSTAN ------------------------------------ KZ
KENYA ----------------------------------------- KE
KIRIBATI -------------------------------------- KI
KOREA, DEMOCRATIC PEOPLE'S REPUBLIC OF -------- KP
KOREA, REPUBLIC OF ---------------------------- KR
KUWAIT ---------------------------------------- KW
KYRGYZSTAN ------------------------------------ KG
LAO PEOPLE'S DEMOCRATIC REPUBLIC -------------- LA
LATVIA ---------------------------------------- LV
LEBANON --------------------------------------- LB
LESOTHO --------------------------------------- LS
LIBERIA --------------------------------------- LR
LIBYAN ARAB JAMAHIRIYA ------------------------ LY
LIECHTENSTEIN --------------------------------- LI
LITHUANIA ------------------------------------- LT
LUXEMBOURG ------------------------------------ LU
MACAU ----------------------------------------- MO
MACEDONIA, THE FORMER YUGOSLAV REPUBLIC OF ---- MK
MADAGASCAR ------------------------------------ MG
MALAWI ---------------------------------------- MW
MALAYSIA -------------------------------------- MY
MALDIVES -------------------------------------- MV
MALI ------------------------------------------ ML
MALTA ----------------------------------------- MT
MARSHALL ISLANDS ------------------------------ MH
MARTINIQUE ------------------------------------ MQ
MAURITANIA ------------------------------------ MR
MAURITIUS ------------------------------------- MU
MAYOTTE --------------------------------------- YT
MEXICO ---------------------------------------- MX
MICRONESIA, FEDERATED STATES OF --------------- FM
MOLDOVA, REPUBLIC OF -------------------------- MD
MONACO ---------------------------------------- MC
MONGOLIA -------------------------------------- MN
MONTSERRAT ------------------------------------ MS
MOROCCO --------------------------------------- MA
MOZAMBIQUE ------------------------------------ MZ
MYANMAR --------------------------------------- MM
NAMIBIA --------------------------------------- NA
NAURU ----------------------------------------- NR
NEPAL ----------------------------------------- NP
NETHERLANDS ----------------------------------- NL
NETHERLANDS ANTILLES -------------------------- AN
NEW CALEDONIA --------------------------------- NC
NEW ZEALAND ----------------------------------- NZ
NICARAGUA ------------------------------------- NI
NIGER ----------------------------------------- NE
NIGERIA --------------------------------------- NG
NIUE ------------------------------------------ NU
NORFOLK ISLAND -------------------------------- NF
NORTHERN MARIANA ISLANDS ---------------------- MP
NORWAY ---------------------------------------- NO
OMAN ------------------------------------------ OM
PAKISTAN -------------------------------------- PK
PALAU ----------------------------------------- PW
PANAMA ---------------------------------------- PA
PAPUA NEW GUINEA ------------------------------ PG
PARAGUAY -------------------------------------- PY
PERU ------------------------------------------ PE
PHILIPPINES ----------------------------------- PH
PITCAIRN -------------------------------------- PN
POLAND ---------------------------------------- PL
PORTUGAL -------------------------------------- PT
PUERTO RICO ----------------------------------- PR
QATAR ----------------------------------------- QA
REUNION --------------------------------------- RE
ROMANIA --------------------------------------- RO
RUSSIAN FEDERATION ---------------------------- RU
RWANDA ---------------------------------------- RW
SAINT KITTS AND NEVIS ------------------------- KN
SAINT LUCIA ----------------------------------- LC
SAINT VINCENT AND THE GRENADINES -------------- VC
SAMOA ----------------------------------------- WS
SAN MARINO ------------------------------------ SM
SAO TOME AND PRINCIPE ------------------------- ST
SAUDI ARABIA ---------------------------------- SA
SENEGAL --------------------------------------- SN
SEYCHELLES ------------------------------------ SC
SIERRA LEONE ---------------------------------- SL
SINGAPORE ------------------------------------- SG
SLOVAKIA (Slovak Republic) -------------------- SK
SLOVENIA ------------------------------------- SI
SOLOMON ISLANDS ------------------------------- SB
SOMALIA --------------------------------------- SO
SOUTH AFRICA ---------------------------------- ZA
SOUTH GEORGIA AND THE SOUTH SANDWICH ISLANDS -- GS
SPAIN ----------------------------------------- ES
SRI LANKA ------------------------------------- LK
ST. HELENA ------------------------------------ SH
ST. PIERRE AND MIQUELON ----------------------- PM
SUDAN ----------------------------------------- SD
SURINAME -------------------------------------- SR
SVALBARD AND JAN MAYEN ISLANDS ---------------- SJ
SWAZILAND ------------------------------------- SZ
SWEDEN ---------------------------------------- SE
SWITZERLAND ----------------------------------- CH
SYRIAN ARAB REPUBLIC -------------------------- SY
TAIWAN ---------------------------------------- TW
TAJIKISTAN ------------------------------------ TJ
TANZANIA, UNITED REPUBLIC OF ------------------ TZ
THAILAND -------------------------------------- TH
TOGO ------------------------------------------ TG
TOKELAU --------------------------------------- TK
TONGA ----------------------------------------- TO
TRINIDAD AND TOBAGO --------------------------- TT
TUNISIA --------------------------------------- TN
TURKEY ---------------------------------------- TR
TURKMENISTAN ---------------------------------- TM
TURKS AND CAICOS ISLANDS ---------------------- TC
TUVALU ---------------------------------------- TV
UGANDA ---------------------------------------- UG
UKRAINE --------------------------------------- UA
UNITED ARAB EMIRATES -------------------------- AE
UNITED KINGDOM -------------------------------- UK
UNITED STATES --------------------------------- US
UNITED STATES MINOR OUTLYING ISLANDS ---------- UM
URUGUAY --------------------------------------- UY
UZBEKISTAN ------------------------------------ UZ
VANUATU --------------------------------------- VU
VATICAN CITY STATE (HOLY SEE) ----------------- VA
VENEZUELA ------------------------------------- VE
VIET NAM -------------------------------------- VN
VIRGIN ISLANDS (BRITISH) ---------------------- VG
VIRGIN ISLANDS (U.S.) ------------------------- VI
WALLIS AND FUTUNA ISLANDS --------------------- WF
WESTERN SAHARA -------------------------------- EH
YEMEN ----------------------------------------- YE
YUGOSLAVIA ------------------------------------ YU
ZAIRE ----------------------------------------- ZR
ZAMBIA ---------------------------------------- ZM
ZIMBABWE -------------------------------------- ZW
출처:네이버 지식인
