|Introduced||28 November 1990|
|TLD type||Country code top-level domain|
|Registry||China Internet Network Information Center|
|Sponsor||Chinese Academy of Sciences|
|Intended use||Entities connected with|
|Actual use||Very popular in mainland China (the largest ccTLD)|
|Registered domains||21 million (April 2017)|
|Structure||Names may be registered directly at the second level or at the third level within generic second-level categories or Chinese province codes|
|Documents||China Internet Domain Name Regulations|
|Dispute policies||China ccTLD Dispute Resolution Policy and China ccTLD Dispute Resolution Policy Rules|
|Registry website||CNNIC (General)|
.cn is the country code top-level domain (ccTLD) for the People's Republic of China introduced on 28 November 1990. Domain name administration in mainland China is managed through a branch of the Ministry of Industry and Information. The registry is maintained by China Internet Network Information Center (CNNIC). Entities connected to Hong Kong, Macau, and Taiwan often use .hk, .mo, .tw respectively, despite their corresponding second-level domains under .cn available for those regions. The Chinese script internationalized country codes are ".中国" (Simplified Chinese) and ".中國" (Traditional Chinese): both have been reserved but the former is more in line with present-day mainland Chinese orthography.
Any individual may register for second-level domain names. However, the registry has created a set of predefined second-level domains for certain types of organizations and geographic locations. Registrations for such third-level domains were available before second-level domains became available in 2003, and registrants of third-level domains were given priority for names at the second level.
Generic second-level domains
- ac.cn : Academic and research institutions
- com.cn : Industrial, commercial, financial enterprises and individuals
- edu.cn : Educational institutions (usually universities and colleges)
- gov.cn : Government departments (both central and local governments)
- mil.cn : Military organizations
- net.cn : Networks, NICs and NOCs
- org.cn : Non-profit organizations
Second-level domains of provinces
The two-letter abbreviations are the same as those found in the People's Republic of China National Standards "Codes for the administrative divisions of the People's Republic of China (GB/T 2260-2002)."
- ah.cn : Anhui Province
- bj.cn : Beijing Municipality
- cq.cn : Chongqing Municipality
- fj.cn : Fujian Province
- gd.cn : Guangdong Province
- gs.cn : Gansu Province
- gz.cn : Guizhou Province
- gx.cn : Guangxi Province
- ha.cn : Henan Province
- hb.cn : Hubei Province
- he.cn : Hebei Province
- hi.cn : Hainan Province
- hl.cn : Heilongjiang Province
- hk.cn : Hong Kong Special Administrative Region
- .hk is more commonly used
- hn.cn : Hunan Province
- jl.cn : Jilin Province
- js.cn : Jiangsu Province
- jx.cn : Jiangxi Province
- ln.cn : Liaoning Province
- mo.cn : Macau Special Administrative Region
- .mo is more commonly used
- nm.cn : Nei Mongol Autonomous Region
- nx.cn : Ningxia Hui Autonomous Region
- qh.cn : Qinghai Province
- sc.cn : Sichuan Province
- sd.cn : Shandong Province
- sh.cn : Shanghai Municipality
- sn.cn : Shaanxi Province
- sx.cn : Shanxi Province
- tj.cn : Tianjin Municipality
- tw.cn : Taiwan Province
- .tw is more commonly used
- xj.cn : Xinjiang Uygur Autonomous Region
- xz.cn : Xizang Autonomous Region
- yn.cn : Yunnan Province
- zj.cn : Zhejiang Province
Internationalized domain names with Chinese characters
On 25 June 2010, ICANN approved the use of the internationalized country code top-level domains ".中国" (China in simplified Chinese characters, DNS name xn--fiqs8s) and ".中國" (China in traditional Chinese characters, DNS name xn--fiqz9s) by CNNIC. These two TLDs were added to the DNS in July 2010.
CNNIC proposed around this time Chinese domain names in ".公司" (".com" in Chinese) and ".网络" (".net" in Chinese). However, these have not been recognized by ICANN yet and are only available via domestic domain name registrars.
Around 15 other generic domain names with Chinese characters have later been registered. See List of Internet top-level domains#Chinese characters.
- Chinanews.com. "Chinanews.com Archived 2013-01-01 at archive.today." 中國接入互聯網. Retrieved on 2009-07-30.
- DENIC (July 2017). "Comparison of international Domain Numbers Top 10 largest TLDs list". Archived from the original on 2017-07-07. Retrieved 2017-07-25.
- "中国省级行政区划一览表". News.xinhuanet.com. 2002-10-01. Archived from the original on November 20, 2004. Retrieved 2012-01-15.
- "Adopted Board Resolutions | Brussels | 25 June 2010". ICANN. Retrieved 2012-01-15.