The following domain extensions list includes every country domain in existence. With this table, you can not only discover which country or area the domain extensions belong to, but also whether the respective ccTLD is available with DNSSEC. Websites can use DNSSEC internet standards in order to protect the domain name system from manipulation, which includes, for example, phishing websites, which can request sensitive data using fake webpages.
The column on the right indicates whether a web address registered under the respective ccTLD can also be allocated an internationalized domain name (IDN). As mentioned above, these internationalized domain names can use characters from the Latin alphabet, including those with accents, in addition to characters from other alphabets. These characters are located in the second-level domain (i.e. the name of the website before the country code top-level domain). One example of this is the Canadian weather website, métro.ca, which includes an accented letter.
Top-level domains that have an IDN can be accessed using both Latin characters as well as characters from their respective alphabet. However, this doesn’t mean that the corresponding top-level domain is also offered as an IDN ccTLD at the same time – as is the case with the aforementioned example of Sri Lanka. A good example of this is Germany’s .de domain extension; although there is no alternative for the .de country code, German website owners can use many special characters, including three vowels with umlauts (ä, ö, ü), the ‘ß’ character, as well as further characters that contain accents (à, á, â, ã etc.). Since the German language is based on the Latin alphabet and can be optimally expressed with a ccTLD (unlike Sri Lanka), it’s also not necessary.