.dd .dd .dd was the assigned country code top-level domain (ccTLD) for the German Democratic Republic (East Germany). It was chosen based on the ISO 3166-1 alpha-2 code for the German Democratic Republic, the letters coming from the German name of the country: '. In accordance with IANA policy, .dd was therefore available to be assigned as the country code top-level domain (ccTLD) for East Germany. However, this was never done, and so .dd was never added to the root nameservers. Its only use was internally at the universities of Jena and Dresden. With the reunification of Germany, East Germany became
Internationalized country code top-level domain codes but full words. For example, السعودية "(as-Suʻūdiyya)" is not an abbreviation of "Saudi Arabia", but the common short-form name of the country in Arabic. Countries with internationalized ccTLDs also retain their traditional ASCII-based ccTLDs. As of August 2018 there are 59 approved internationalized country code top-level domains, of them at least 47 used. The most used are .рф (Russia) with over 900,000 domains names, .台灣 (Taiwan) with around 500,000 and .中国 (China) with over 200,000 domains. Still as of 2018 around 20 countries using non-latin script do not have an internationalized country code top-level domain, including Israel and Japan.