.kr

.kr is the ccTLD for South Korea. It is managed by the Korea Internet & Security Agency (KISA).

Rules and Restrictions

The ccTLD is restricted to use by companies, organizations, and individuals who have a postal address within the Republic of Korea.

Second-level Domains

In the .kr domain, registration is available at the second level, or at the third level under a variety of use-restricted second level domains. As well as the SLDs listed below, there are region-specific SLDs for use by "any organization, company and/or individuals connected with that region" (seoul, busan, daegu, incheon, gwangju, daejeon, ulsan, gyeonggi, gangwon, chungbuk, chungnam, jeonbuk, jeonnam, gyeongbuk, gyeongnam, and jeju).

SLD	Used by	Additional Requirements
co	commercial companies
ne	network related organizations
or	non-profit organizations
re	research institutes
pe	individuals	natural person
go	governmental authorities	Korean governmental authorities that are organized and exist according to the laws of Korea
mil	military authorities	military authorities that are organized and exist according to the laws of Korea
ac	college/universities	Educational institutions established according to the Framework Act on Education, the Higher Education Act, or other special Acts
hs	high schools	high schools that are organized and exist according to the laws of Korea
ms	middle schools	middle schools that are organized and exist according to the laws of Korea
es	elementary schools	elementary schools that are organized and exist according to the laws of Korea
sc	schools & educational institutes	any school or education institutes that have equal position according to the laws of Korea
kg	kindergarten	kindergartens that are organized and exist according to the laws of Korea

Characters

The requirements for third level domains are as follows:

• letters of the alphabet [A to Z] or [a to z], numbers [0 to 9], and hyphens are available for use for domain names.;
• domain name shall contain a minimum of 2 characters and a maximum of 63 characters.
• domain name shall not begin or end with a hyphen. Consecutive hyphens are not allowed between the third and the fourth characters.

Requirements for second level domains are as follows:

• a second level domain name must contain Hangeul characters (2,350 characters). Letters of the alphabet [A to Z] or [a to z], numbers [0 to 9], and hyphens are also available for second level domain name use with the exception of a combination of numbers and hyphens only;
• a domain name shall contain a minimum of 3 characters and a maximum of 63 characters, unless it contains Hangeul, in which case it shall contain a minimum of 2 characters and a maximum of 17 characters;
• a domain name shall not begin or end with a hyphen. Consecutive hyphens are not allowed between the third and the fourth characters.

The requirements for hankuk domains are as follows:

• letters of the Hanguel (Korean character, 11,172), alphabet [A to Z] or [a to z], numbers [0 to 9], and hyphens are available for use for domain names. More than 1 hanguel must be included in.
• a domain name shall contain a minimum of 1 characters and a maximum of 17 characters.
• a domain name shall not begin or end with a hyphen., Consecutive hyphens are not allowed between the third and the fourth characters.

Usage

As of March 2021, the .kr domain has over one million active registrations.

Country code top-level domain

Second Level Domain